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About the Docking@Home Science: Preliminary Results
First Phase HIV1 (A)
Second Phase HIV1 (B)
Third Phase HIV1 (C)
Preliminary results for three simulation phases for HIV1
Docking@Home uses a postprocessing algorithm to find native-like structures (structures that are similar to those in nature). Using this algorithm D@H avoids the use of replication and finds from millions of potential candidates one that is more likely to occur in nature.
Preliminary tests were done using 23 HIV1 complexes in three pases. The first phase (A) tested a simple model and fast model. The second phase(B) tested a more accurate and computationally expensive model. The third phase (C) tested the second model (accurate but expensive) producing a random variation from a structure that was proven to be at least 5A different from the native (crystal) structure.
The following figures compare the single candidate obtained using our prostprocessing algorithm versus the top 5 structures with minimum energy. The star represents our candidate while the boxplot represents the variance of the Top-5 minimum energy structures. A good candidate should be at most 2A away from the crystal structure. The vertical axis show the RMSD with respect to the crystal structure (the lower the better). The horizontal axis show the different complexes.
Preliminary results show that our postprocessing method is reliable and robust. It is insensitive to the model being used and to the initial conditions of the simulations. Our algorithm finds good candidates in 86% of the cases, while minimum energy finds good candidates only in 34% of the cases | 
发表于 2009-11-29 10:15:00
