Journal
PROTEIN SCIENCE
Volume 16, Issue 11, Pages 2472-2482Publisher
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1110/ps.073037907
Keywords
X-ray crystallography; protein crystallization; protein structure initiative; structural genomics; target selection
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Funding
- NIGMS NIH HHS [P20 GM076221, U54 GM074898] Funding Source: Medline
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The process of experimental determination of protein structure is marred with a high ratio of failures at many stages. With availability of large quantities of data from high-throughput structure determination in structural genomics centers, we can now learn to recognize protein features correlated with failures; thus, we can recognize proteins more likely to succeed and eventually learn how to modify those that are less likely to succeed. Here, we identify several protein features that correlate strongly with successful protein production and crystallization and combine them into a single score that assesses crystallization feasibility.'' The formula derived here was tested with a jackknife procedure and validated on independent benchmark sets. The crystallization feasibility'' score described here is being applied to target selection in the Joint Center for Structural Genomics, and is now contributing to increasing the success rate, lowering the costs, and shortening the time for protein structure determination. Analyses of PDB depositions suggest that very similar features also play a role in non-high-throughput structure determination, suggesting that this crystallization feasibility score would also be of significant interest to structural biology, as well as to molecular and biochemistry laboratories.
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