期刊
JOURNAL OF MOLECULAR BIOLOGY
卷 326, 期 5, 页码 1307-1316出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/S0022-2836(03)00045-7
关键词
protein structure; RMSD; P-value; local similarity; active site; functional pattern
Structural biology can provide three-dimensional structures for proteins of unknown function. When sequence or structure comparisons fail to suggest a function, insights can come from discovery of functionally important local structural patterns. Existing methods to detect such patterns lack rigorous statistics needed for widespread application. Here, we derive a formula to calculate statistical significance of the root-mean-square deviation between atoms in such patterns. When combined with a database search method, our statistics permit true functional or structural patterns in different folds to be discerned from noise. The approach is highly complementary to fold comparison for providing functional clues for, new structures, and is key for the detection of recurrences of any new pattern. (C) 2003 Published by Elsevier Science Ltd.
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