| simulated annealing |
GB3 solution structure obtained by refinement of the X-ray structure of GB3 (1IGD) with C(alpha)-C', C'-N and C(alpha)-H(alpha) dipolar couplings measured in five aligning media (bicelle, PEG, pf1 phage, negatively and
positively charged polyacrylamide gels). HN is placed at the position that yields best agreement with the N-H dipolar couplings. Dipolar couplings originating on residues 10-11, 24-26, 39-41 and the N- and C-terminal residues were excluded, resulting in identity with the X-ray structure for these residues. Less than five N-H couplings could be obtained for residues Q2, E15, E27, N35, N37, and Y45 and for these residues as well as the excluded ones HN is placed on a line that bisects the C'(i-1)-N(i)-C(alpha,i) angle. |
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