Protein comparison and classification: a differential geometric approach.
AUTOR(ES)
Rackovsky, S
RESUMO
A method is proposed for rapidly, quantitatively comparing protein structures of arbitrary sizes, based on the differential geometric representation. The method is applied to a group of 22 protein x-ray structures, and the resulting network of closest relationships is delineated. Several well-known fold types are automatically detected as groupings of related structures, even when the constituent proteins are of different lengths. A complete gradation of types is shown to be detected, ranging from all-helical to all-beta-structure proteins. A relationship among functionally similar proteins is shown in several cases, even where their three-dimensional structures differ. It is suggested that the positions of proteins within the network of relationships correspond with their folding mechanisms.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=279638Documentos Relacionados
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