char = M;code = 77 char = a;code = 97 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = x;code = 120 char = -;code = 45 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = r;code = 114 char = p;code = 112 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = /;code = 47 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = i;code = 105 char = s;code = 115 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = -;code = 45 char = o;code = 111 char = f;code = 102 char = -;code = 45 char = f;code = 102 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 char = .;code = 46 char = ;code = 32 char = A;code = 65 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = s;code = 115 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = b;code = 98 char = t;code = 116 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = c;code = 99 char = a;code = 97 char = y;code = 121 char = ,;code = 44 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = c;code = 99 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = -;code = 45 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = l;code = 108 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = c;code = 99 char = l;code = 108 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = g;code = 103 char = l;code = 108 char = u;code = 117 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = i;code = 105 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = c;code = 99 char = a;code = 97 char = y;code = 121 char = .;code = 46 result sql = Matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry. A comparison of fragmentation patterns of linear dextran obtained by in-source decay, post-source decay and collision-induced dissociation and the stability of linear and cyclic glucans studied by in-source decay.
Matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry. A comparison of fragmentation patterns of linear dextran obtained by in-source decay, post-source decay and collision-induced dissociation and the stability of linear and cyclic glucans studied by in-source decay.char = I;code = 73 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = r;code = 114 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = 4;code = 52 char = -;code = 45 char = 2;code = 50 char = 0;code = 48 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = h;code = 104 char = y;code = 121 char = d;code = 100 char = r;code = 114 char = o;code = 111 char = g;code = 103 char = l;code = 108 char = u;code = 117 char = c;code = 99 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = i;code = 105 char = t;code = 116 char = s;code = 115 char = );code = 41 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = y;code = 121 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = x;code = 120 char = -;code = 45 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = r;code = 114 char = p;code = 112 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = /;code = 47 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = i;code = 105 char = s;code = 115 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = M;code = 77 char = A;code = 65 char = L;code = 76 char = D;code = 68 char = I;code = 73 char = );code = 41 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 char = .;code = 46 char = ;code = 32 char = C;code = 67 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = -;code = 45 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = -;code = 45 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = C;code = 67 char = I;code = 73 char = D;code = 68 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = c;code = 99 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = (;code = 40 char = I;code = 73 char = S;code = 83 char = D;code = 68 char = );code = 41 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = c;code = 99 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = (;code = 40 char = P;code = 80 char = S;code = 83 char = D;code = 68 char = );code = 41 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = g;code = 103 char = l;code = 108 char = y;code = 121 char = c;code = 99 char = o;code = 111 char = s;code = 115 char = i;code = 105 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = b;code = 98 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = B;code = 66 char = o;code = 111 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = C;code = 67 char = I;code = 73 char = D;code = 68 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = I;code = 73 char = S;code = 83 char = D;code = 68 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = u;code = 117 char = r;code = 114 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = d;code = 100 char = u;code = 117 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = g;code = 103 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = i;code = 105 char = d;code = 100 char = u;code = 117 char = e;code = 101 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = t;code = 116 char = t;code = 116 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = s;code = 115 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = P;code = 80 char = S;code = 83 char = D;code = 68 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = u;code = 117 char = m;code = 109 char = .;code = 46 char = ;code = 32 char = D;code = 68 char = e;code = 101 char = r;code = 114 char = i;code = 105 char = v;code = 118 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = s;code = 115 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = d;code = 100 char = -;code = 45 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = 1;code = 49 char = -;code = 45 char = p;code = 112 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = y;code = 121 char = l;code = 108 char = -;code = 45 char = 3;code = 51 char = -;code = 45 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = y;code = 121 char = l;code = 108 char = -;code = 45 char = 5;code = 53 char = -;code = 45 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = a;code = 97 char = z;code = 122 char = o;code = 111 char = l;code = 108 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = P;code = 80 char = M;code = 77 char = P;code = 80 char = );code = 41 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = c;code = 99 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = M;code = 77 char = A;code = 65 char = L;code = 76 char = D;code = 68 char = I;code = 73 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = n;code = 110 char = -;code = 45 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = u;code = 117 char = r;code = 114 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = i;code = 105 char = t;code = 116 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = e;code = 101 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = H;code = 72 char = P;code = 80 char = L;code = 76 char = C;code = 67 char = ;code = 32 char = s;code = 115 char = o;code = 111 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = n;code = 110 char = g;code = 103 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = l;code = 108 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = d;code = 100 char = .;code = 46 char = ;code = 32 char = M;code = 77 char = a;code = 97 char = l;code = 108 char = t;code = 116 char = o;code = 111 char = h;code = 104 char = e;code = 101 char = p;code = 112 char = t;code = 116 char = a;code = 97 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = o;code = 111 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = d;code = 100 char = .;code = 46 char = ;code = 32 char = I;code = 73 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = e;code = 101 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = t;code = 116 char = ;code = 32 char = I;code = 73 char = S;code = 83 char = D;code = 68 char = -;code = 45 char = M;code = 77 char = A;code = 65 char = L;code = 76 char = D;code = 68 char = I;code = 73 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = o;code = 111 char = g;code = 103 char = l;code = 108 char = u;code = 117 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = l;code = 108 char = t;code = 116 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = c;code = 99 char = l;code = 108 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = k;code = 107 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = e;code = 101 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = u;code = 117 char = c;code = 99 char = t;code = 116 char = u;code = 117 char = r;code = 114 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = u;code = 117 char = l;code = 108 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = g;code = 103 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = g;code = 103 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = d;code = 100 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = N;code = 78 char = M;code = 77 char = R;code = 82 char = .;code = 46 char = ;code = 32 char = D;code = 68 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = t;code = 116 char = t;code = 116 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = v;code = 118 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = y;code = 121 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = g;code = 103 char = l;code = 108 char = y;code = 121 char = c;code = 99 char = o;code = 111 char = s;code = 115 char = i;code = 105 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = b;code = 98 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = k;code = 107 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = c;code = 99 char = l;code = 108 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = y;code = 121 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = l;code = 108 char = t;code = 116 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = d;code = 100 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = g;code = 103 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = M;code = 77 char = A;code = 65 char = L;code = 76 char = D;code = 68 char = I;code = 73 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 char = ,;code = 44 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = u;code = 117 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = i;code = 105 char = l;code = 108 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = b;code = 98 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = r;code = 114 char = g;code = 103 char = y;code = 121 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = e;code = 101 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = y;code = 121 char = p;code = 112 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = k;code = 107 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = In the first part of this study fragmentation patterns from a range of dextran oligomers (containing 4-20 anhydroglucose units) were compared in three different methods of analysis coupled with matrix-assisted laser desorption/ionisation (MALDI) mass spectrometry. Collision-induced-dissociation (CID), prompt in-source decay (ISD) and post-source decay (PSD) all caused cleavage of the glycosidic bonds. Both CID and to a lesser extent ISD caused further cleavage of pyranose rings of the individual sugar residues. There was very little cleavage of pyranose rings detected in the PSD spectrum. Derivatisation of the reducing end-groups of the oligodextrans with 1-phenyl-3-methyl-5-pyrazolone (PMP) restricted cleavage in the MALDI mass spectrometer to the non-reducing end, and further it enabled the saccharides to be separated by HPLC so that a single chain length could be examined as a standard. Maltoheptaose was also used as a standard. In the second part of the study prompt ISD-MALDI mass spectrometry was used to compare the fragmentation of three oligoglucans, dextran, maltodextrin and gamma cyclodextrin, that have different linkages and different secondary structure. The results showed that the degree of fragmentation correlated with the degree of freedom in the saccharide chains in solution determined by NMR. Dextran the most random conformation was fragmented most whereas there was little evidence of any fragments, not even glycosidic bond breakage from cyclodextrin, even when the laser power was increased considerably. The fragmentation pattern of maltodextrin was intermediate. The patterns of fragmentation produced by MALDI mass spectrometry, particularly where standards are available to calibrate the spectrum and the energy of the laser is controlled, can be used to predict the type of linkage present.
Publication: Eur J Mass Spectrom (Chichester, Eng) 2004 ;10(1)::109-20.
Publication Date: 2004
Study Author(s): Bashir, Sajid;Giannakopulos, Anastassios E;Derrick, Peter J;Critchley, Peter;Bottrill, Andrew;Padley, Henry J;
Institution: Institute of Mass Spectrometry, University of Warwick, Coventry CV4 7AL, UK.
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In the first part of this study fragmentation patterns from a range of dextran oligomers (containing 4-20 anhydroglucose units) were compared in three different methods of analysis coupled with matrix-assisted laser desorption/ionisation (MALDI) mass spectrometry. Collision-induced-dissociation (CID), prompt in-source decay (ISD) and post-source decay (PSD) all caused cleavage of the glycosidic bonds. Both CID and to a lesser extent ISD caused further cleavage of pyranose rings of the individual sugar residues. There was very little cleavage of pyranose rings detected in the PSD spectrum. Derivatisation of the reducing end-groups of the oligodextrans with 1-phenyl-3-methyl-5-pyrazolone (PMP) restricted cleavage in the MALDI mass spectrometer to the non-reducing end, and further it enabled the saccharides to be separated by HPLC so that a single chain length could be examined as a standard. Maltoheptaose was also used as a standard. In the second part of the study prompt ISD-MALDI mass spectrometry was used to compare the fragmentation of three oligoglucans, dextran, maltodextrin and gamma cyclodextrin, that have different linkages and different secondary structure. The results showed that the degree of fragmentation correlated with the degree of freedom in the saccharide chains in solution determined by NMR. Dextran the most random conformation was fragmented most whereas there was little evidence of any fragments, not even glycosidic bond breakage from cyclodextrin, even when the laser power was increased considerably. The fragmentation pattern of maltodextrin was intermediate. The patterns of fragmentation produced by MALDI mass spectrometry, particularly where standards are available to calibrate the spectrum and the energy of the laser is controlled, can be used to predict the type of linkage present.
PMID: 15100483