char = S;code = 83 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 = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = c;code = 99 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 = N;code = 78 char = -;code = 45 char = o;code = 111 char = x;code = 120 char = y;code = 121 char = g;code = 103 char = e;code = 101 char = n;code = 110 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = A;code = 65 char = u;code = 117 char = r;code = 114 char = F;code = 70 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = S;code = 83 char = t;code = 116 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = t;code = 116 char = o;code = 111 char = m;code = 109 char = y;code = 121 char = c;code = 99 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = e;code = 101 char = u;code = 117 char = s;code = 115 char = .;code = 46 result sql = Structure and action of the N-oxygenase AurF from Streptomyces thioluteus.
Structure and action of the N-oxygenase AurF from Streptomyces thioluteus.char = N;code = 78 char = i;code = 105 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = ;code = 32 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 = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = n;code = 110 char = u;code = 117 char = m;code = 109 char = b;code = 98 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = o;code = 111 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = o;code = 111 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = M;code = 77 char = o;code = 111 char = s;code = 115 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 = m;code = 109 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = p;code = 112 char = w;code = 119 char = i;code = 105 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = o;code = 111 char = -;code = 45 char = o;code = 111 char = x;code = 120 char = y;code = 121 char = g;code = 103 char = e;code = 101 char = n;code = 110 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 = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = ;code = 32 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 = 46 char = ;code = 32 char = O;code = 79 char = n;code = 110 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 = i;code = 105 char = n;code = 110 char = v;code = 118 char = o;code = 111 char = l;code = 108 char = v;code = 118 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = z;code = 122 char = y;code = 121 char = m;code = 109 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = A;code = 65 char = u;code = 117 char = r;code = 114 char = F;code = 70 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 = i;code = 105 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 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 = b;code = 98 char = i;code = 105 char = o;code = 111 char = s;code = 115 char = y;code = 121 char = n;code = 110 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = u;code = 117 char = r;code = 114 char = e;code = 101 char = o;code = 111 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = n;code = 110 char = .;code = 46 char = ;code = 32 char = I;code = 73 char = t;code = 116 char = s;code = 115 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 = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = h;code = 104 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = 2;code = 50 char = .;code = 46 char = 1;code = 49 char = ;code = 32 char = A;code = 65 char = ;code = 32 char = r;code = 114 char = e;code = 101 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 = s;code = 115 char = h;code = 104 char = o;code = 111 char = w;code = 119 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = h;code = 104 char = o;code = 111 char = m;code = 109 char = o;code = 111 char = d;code = 100 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = u;code = 117 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = a;code = 97 char = n;code = 110 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = z;code = 122 char = y;code = 121 char = m;code = 109 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = r;code = 114 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 = i;code = 105 char = o;code = 111 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = y;code = 121 char = i;code = 105 char = e;code = 101 char = l;code = 108 char = d;code = 100 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 = a;code = 97 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = y;code = 121 char = z;code = 122 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = r;code = 114 char = y;code = 121 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = ,;code = 44 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 = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = v;code = 118 char = i;code = 105 char = v;code = 118 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = a;code = 97 char = y;code = 121 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = l;code = 108 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = h;code = 104 char = o;code = 111 char = m;code = 109 char = o;code = 111 char = l;code = 108 char = o;code = 111 char = g;code = 103 char = o;code = 111 char = u;code = 117 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 = r;code = 114 char = i;code = 105 char = b;code = 98 char = o;code = 111 char = n;code = 110 char = u;code = 117 char = c;code = 99 char = l;code = 108 char = e;code = 101 char = o;code = 111 char = t;code = 116 char = i;code = 105 char = d;code = 100 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 = t;code = 116 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = b;code = 98 char = u;code = 117 char = n;code = 110 char = i;code = 105 char = t;code = 116 char = ;code = 32 char = R;code = 82 char = 2;code = 50 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 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 = e;code = 101 char = n;code = 110 char = z;code = 122 char = y;code = 121 char = m;code = 109 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 = ;code = 32 char = t;code = 116 char = w;code = 119 char = o;code = 111 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = a;code = 97 char = n;code = 110 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = i;code = 105 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = b;code = 98 char = o;code = 111 char = u;code = 117 char = t;code = 116 char = ;code = 32 char = 1;code = 49 char = 5;code = 53 char = %;code = 37 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = h;code = 104 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = l;code = 108 char = o;code = 111 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = X;code = 88 char = -;code = 45 char = r;code = 114 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = r;code = 114 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 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 = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = r;code = 114 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 = o;code = 111 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = -;code = 45 char = i;code = 105 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = g;code = 103 char = g;code = 103 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = d;code = 100 char = d;code = 100 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = d;code = 100 char = i;code = 105 char = n;code = 110 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 = c;code = 99 char = o;code = 111 char = o;code = 111 char = r;code = 114 char = d;code = 100 char = i;code = 105 char = n;code = 110 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = h;code = 104 char = e;code = 101 char = r;code = 114 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 = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = a;code = 97 char = n;code = 110 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = i;code = 105 char = r;code = 114 char = o;code = 111 char = n;code = 110 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 = i;code = 105 char = s;code = 115 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = ;code = 32 char = o;code = 111 char = x;code = 120 char = o;code = 111 char = -;code = 45 char = b;code = 98 char = r;code = 114 char = i;code = 105 char = d;code = 100 char = g;code = 103 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 = s;code = 115 char = u;code = 117 char = b;code = 98 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = -;code = 45 char = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = -;code = 45 char = b;code = 98 char = e;code = 101 char = n;code = 110 char = z;code = 122 char = o;code = 111 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = l;code = 108 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = l;code = 108 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = p;code = 112 char = p;code = 112 char = o;code = 111 char = r;code = 114 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 = m;code = 109 char = u;code = 117 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = e;code = 101 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = I;code = 73 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = o;code = 111 char = w;code = 119 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = g;code = 103 char = e;code = 101 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 = 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 = a;code = 97 char = c;code = 99 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 = e;code = 101 char = x;code = 120 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = i;code = 105 char = s;code = 115 char = h;code = 104 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = b;code = 98 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = t;code = 116 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 = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = Nitro groups are found in a number of bioactive compounds. Most of them arise by a stepwise mono-oxygenation of amino groups. One of the involved enzymes is AurF participating in the biosynthesis of aureothin. Its structure was established at 2.1 A resolution showing a homodimer with a binuclear manganese cluster. The enzyme preparation, which yielded the analyzed crystals, showed activity using in vitro and in vivo assays. Chain fold and cluster are homologous with ribonucleotide reductase subunit R2 and related enzymes. The two manganese ions and an iron content of about 15% were established by anomalous X-ray diffraction. A comparison of the cluster with more common di-iron clusters suggested an additional histidine in the coordination sphere to cause the preference for manganese over iron. There is no oxo-bridge. The substrate p-amino-benzoate was modeled into the active center. The model is supported by mutant activity measurements. It shows the geometry of the reaction and explains the established substrate spectrum.
Publication: J. Mol. Biol. 2007 Oct 12 ;373(1)::65-74.
Publication Date: 2007 Oct 12
Study Author(s): Zocher, Georg;Winkler, Robert;Hertweck, Christian;Schulz, Georg E;
Institution: Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.
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Nitro groups are found in a number of bioactive compounds. Most of them arise by a stepwise mono-oxygenation of amino groups. One of the involved enzymes is AurF participating in the biosynthesis of aureothin. Its structure was established at 2.1 A resolution showing a homodimer with a binuclear manganese cluster. The enzyme preparation, which yielded the analyzed crystals, showed activity using in vitro and in vivo assays. Chain fold and cluster are homologous with ribonucleotide reductase subunit R2 and related enzymes. The two manganese ions and an iron content of about 15% were established by anomalous X-ray diffraction. A comparison of the cluster with more common di-iron clusters suggested an additional histidine in the coordination sphere to cause the preference for manganese over iron. There is no oxo-bridge. The substrate p-amino-benzoate was modeled into the active center. The model is supported by mutant activity measurements. It shows the geometry of the reaction and explains the established substrate spectrum.
PMID: 17765264