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result sql = A unique hydrophobic cluster near the active site contributes to differences in borrelidin inhibition among threonyl-tRNA synthetases.
A unique hydrophobic cluster near the active site contributes to differences in borrelidin inhibition among threonyl-tRNA synthetases.
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char = p;code = 112
char = t;code = 116
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = f;code = 102
char = l;code = 108
char = u;code = 117
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = g;code = 103
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 = s;code = 115
char = e;code = 101
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 = 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 = 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 = b;code = 98
char = o;code = 111
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = E;code = 69
char = .;code = 46
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = r;code = 114
char = R;code = 82
char = S;code = 83
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 = e;code = 101
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = e;code = 101
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = n;code = 110
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 = 65
char = T;code = 84
char = P;code = 80
char = .;code = 46
char = ;code = 32
char = G;code = 71
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = l;code = 108
char = e;code = 101
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 = b;code = 98
char = o;code = 111
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
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 = 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 = b;code = 98
char = o;code = 111
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = g;code = 103
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = (;code = 40
char = T;code = 84
char = h;code = 104
char = r;code = 114
char = -;code = 45
char = 3;code = 51
char = 0;code = 48
char = 7;code = 55
char = ,;code = 44
char = ;code = 32
char = H;code = 72
char = i;code = 105
char = s;code = 115
char = -;code = 45
char = 3;code = 51
char = 0;code = 48
char = 9;code = 57
char = ,;code = 44
char = ;code = 32
char = C;code = 67
char = y;code = 121
char = s;code = 115
char = -;code = 45
char = 3;code = 51
char = 3;code = 51
char = 4;code = 52
char = ,;code = 44
char = ;code = 32
char = P;code = 80
char = r;code = 114
char = o;code = 111
char = -;code = 45
char = 3;code = 51
char = 3;code = 51
char = 5;code = 53
char = ,;code = 44
char = ;code = 32
char = L;code = 76
char = e;code = 101
char = u;code = 117
char = -;code = 45
char = 4;code = 52
char = 8;code = 56
char = 9;code = 57
char = ,;code = 44
char = ;code = 32
char = L;code = 76
char = e;code = 101
char = u;code = 117
char = -;code = 45
char = 4;code = 52
char = 9;code = 57
char = 3;code = 51
char = );code = 41
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = l;code = 108
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 = z;code = 122
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
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 = 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 = s;code = 115
char = i;code = 105
char = t;code = 116
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 = E;code = 69
char = .;code = 46
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = r;code = 114
char = R;code = 82
char = S;code = 83
char = .;code = 46
char = ;code = 32
char = M;code = 77
char = u;code = 117
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
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 = ;code = 32
char = L;code = 76
char = e;code = 101
char = u;code = 117
char = -;code = 45
char = 4;code = 52
char = 8;code = 56
char = 9;code = 57
char = ;code = 32
char = -;code = 45
char = -;code = 45
char = >;code = 62
char = ;code = 32
char = T;code = 84
char = r;code = 114
char = p;code = 112
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
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 = p;code = 112
char = a;code = 97
char = c;code = 99
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 = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = c;code = 99
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 = n;code = 110
char = d;code = 100
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 = e;code = 101
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 = 1;code = 49
char = 5;code = 53
char = 0;code = 48
char = 0;code = 48
char = -;code = 45
char = f;code = 102
char = o;code = 111
char = l;code = 108
char = d;code = 100
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 = ;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 = K;code = 75
char = (;code = 40
char = i;code = 105
char = );code = 41
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = l;code = 108
char = u;code = 117
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 = 4;code = 52
char = ;code = 32
char = n;code = 110
char = M;code = 77
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = 6;code = 54
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = m;code = 109
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 = T;code = 84
char = h;code = 104
char = r;code = 114
char = R;code = 82
char = S;code = 83
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
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 = i;code = 105
char = s;code = 115
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 = i;code = 105
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = s;code = 115
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = A;code = 65
char = r;code = 114
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = e;code = 101
char = a;code = 97
char = ;code = 32
char = (;code = 40
char = e;code = 101
char = .;code = 46
char = g;code = 103
char = .;code = 46
char = ;code = 32
char = M;code = 77
char = .;code = 46
char = ;code = 32
char = j;code = 106
char = a;code = 97
char = n;code = 110
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = h;code = 104
char = i;code = 105
char = i;code = 105
char = ,;code = 44
char = ;code = 32
char = A;code = 65
char = .;code = 46
char = ;code = 32
char = f;code = 102
char = u;code = 117
char = l;code = 108
char = g;code = 103
char = i;code = 105
char = d;code = 100
char = u;code = 117
char = s;code = 115
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = e;code = 101
char = .;code = 46
char = g;code = 103
char = .;code = 46
char = ;code = 32
char = H;code = 72
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = o;code = 111
char = b;code = 98
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = y;code = 121
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = );code = 41
char = .;code = 46
char = ;code = 32
char = T;code = 84
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 = i;code = 105
char = l;code = 108
char = l;code = 108
char = u;code = 117
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 = s;code = 115
char = ;code = 32
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = o;code = 111
char = a;code = 97
char = c;code = 99
char = y;code = 121
char = l;code = 108
char = -;code = 45
char = t;code = 116
char = R;code = 82
char = N;code = 78
char = A;code = 65
char = ;code = 32
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 = t;code = 116
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = u;code = 117
char = n;code = 110
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = v;code = 118
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = f;code = 102
char = u;code = 117
char = l;code = 108
char = ;code = 32
char = i;code = 105
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 = f;code = 102
char = o;code = 111
char = r;code = 114
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 = 45
char = b;code = 98
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = Borrelidin, a compound with anti-microbial and anti-angiogenic properties, is a known inhibitor of bacterial and eukaryal threonyl-tRNA synthetase (ThrRS). The inhibition mechanism of borrelidin is not well understood. Archaea contain archaeal and bacterial genre ThrRS enzymes that can be distinguished by their sequence. We explored species-specific borrelidin inhibition of ThrRSs. The activity of ThrRS from Sulfolobus solfataricus and Halobacterium sp. NRC-1 was inhibited by borrelidin, whereas ThrRS enzymes from Methanocaldococcus jannaschii and Archaeoglobus fulgidus were not. In Escherichia coli ThrRS, borrelidin binding induced a conformational change, and threonine was not activated as shown by ATP-PP(i) exchange and a transient kinetic assay measuring intrinsic tryptophan fluorescence changes. These assays further showed that borrelidin is a noncompetitive tight binding inhibitor of E. coli ThrRS with respect to threonine and ATP. Genetic selection of borrelidin-resistant mutants showed that borrelidin binds to a hydrophobic region (Thr-307, His-309, Cys-334, Pro-335, Leu-489, Leu-493) proximal to the zinc ion at the active site of the E. coli ThrRS. Mutating residue Leu-489 --> Trp reduced the space of the hydrophobic cluster and resulted in a 1500-fold increase of the K(i) value from 4 nM to 6 microm. An alignment of ThrRS sequences showed that this cluster is conserved in most organisms except for some Archaea (e.g. M. jannaschii, A. fulgidus) and some pathogens (e.g. Helicobacter pylori). This study illustrates how one class of natural product inhibitors affects aminoacyl-tRNA synthetase function, providing potentially useful information for structure-based inhibitor design.

Publication: J. Biol. Chem. 2005 Jan 7 ;280(1)::571-7.
Publication Date: 2005 Jan 7
Study Author(s): Ruan, Benfang;Bovee, Michael L;Sacher, Meik;Stathopoulos, Constantinos;Poralla, Karl;Francklyn, Christopher S;Söll, Dieter;
Institution: Department of Molecular Biophysics, Yale University, New Haven, Connecticut 06520-8114, USA.
Shortcut link to this study:
Borrelidin, a compound with anti-microbial and anti-angiogenic properties, is a known inhibitor of bacterial and eukaryal threonyl-tRNA synthetase (ThrRS). The inhibition mechanism of borrelidin is not well understood. Archaea contain archaeal and bacterial genre ThrRS enzymes that can be distinguished by their sequence. We explored species-specific borrelidin inhibition of ThrRSs. The activity of ThrRS from Sulfolobus solfataricus and Halobacterium sp. NRC-1 was inhibited by borrelidin, whereas ThrRS enzymes from Methanocaldococcus jannaschii and Archaeoglobus fulgidus were not. In Escherichia coli ThrRS, borrelidin binding induced a conformational change, and threonine was not activated as shown by ATP-PP(i) exchange and a transient kinetic assay measuring intrinsic tryptophan fluorescence changes. These assays further showed that borrelidin is a noncompetitive tight binding inhibitor of E. coli ThrRS with respect to threonine and ATP. Genetic selection of borrelidin-resistant mutants showed that borrelidin binds to a hydrophobic region (Thr-307, His-309, Cys-334, Pro-335, Leu-489, Leu-493) proximal to the zinc ion at the active site of the E. coli ThrRS. Mutating residue Leu-489 --> Trp reduced the space of the hydrophobic cluster and resulted in a 1500-fold increase of the K(i) value from 4 nM to 6 microm. An alignment of ThrRS sequences showed that this cluster is conserved in most organisms except for some Archaea (e.g. M. jannaschii, A. fulgidus) and some pathogens (e.g. Helicobacter pylori). This study illustrates how one class of natural product inhibitors affects aminoacyl-tRNA synthetase function, providing potentially useful information for structure-based inhibitor design.
PMID: 15507440

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