| simulated annealing |
STRUCTURES WERE CALCULATED WITH A MODIFIED VERSION OF X-PLOR (SEE JRNL REFERENCE FOR DETAILS) WITH A SIMULATED ANNEALING PROTOCOL. AN AUTOMATED PROCEDURE (ARIA) WAS USED TO AUTOMATICALLY ASSIGN AND AUGMENT AN INITIAL LIST OF 568 MANUALLY SELECTED RESTRAINTS, FROM PEAK LISTS FROM TWO H2O NOESY SPECTRA (30 AND 80 MS). 20 STRUCTURES WERE ITERATIVELY REFINED, AND THE NOE DATA RE-ASSIGNED ON THE BASIS OF THE 7 LOWEST ENERGY STRUCTURES IN EACH ITERATION. EIGHT REFINEMENT/ASSIGNMENT CYCLES WERE RUN, PLUS TWO IN AN EXPLICIT SHELL OF WATER. THE FINAL LIST OF RESTRAINTS CONTAINED 1328 UNAMBIGUOUS RESTRAINTS AND 486 AMBIGUOUS RESTRAINTS WITH MAXIMALLY 5 ASSIGNMENT POSSIBILITIES. |
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