BIOL 87 |
| Time-resolved wide-angle X-ray scattering (WAXS) is an emerging technique that can be used to follow structural changes of protein in solution. To check if it is possible to obtain 3D structural information of transient protein intermediates from TR-WAXS data, we have applied the refinement technique of X-ray crystallography to the analysis of mock TR-WAXS data. Since the number of data points in TR-WAXS data is much smaller than that available for X-ray crystallography, the number of fitting parameters has to be reduced by using constraints and grouping atoms into alpha-helices and loops. A similar target function consisting of data term and chemical term was used in the refinement. The use of R and free R factors borrowed from X-ray crystallography allowed us to check the degree of over-fitting. |
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Frontiers in Chemical Biology
5:00 PM-7:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Biological Chemistry |