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Structural plasticity associated with the beta-propeller architecture.

Abstract：

:The beta-propeller architecture observed in protein tertiary structure and classified into the five different types according to number of 'blades' (or beta-sheets) and a sixth type classified according to the secondary structure composition of the blades (the beta beta alpha beta-molecular unit) is characterized by variations (or plasticity) in the structure. These correspond to the number of beta-strands associated with the blade, the number of amino acid residues associated with equivalent beta-strands in the different blades and the presence of alpha-helices and twisted beta-strands. We have generated a beta-sheet associated beta-strand pattern that may be important for protein structure prediction and modeling. Analysis of the beta-propellers extracted primarily from the SCOP database revealed there are 179 beta-propellers. The examination of the secondary structure corresponding to the beta-propeller using PDBsum that was useful to define the beta-sheet associated beta-strand pattern, combined with visualization on graphics display revealed structural plasticity associated with the beta-propeller architecture. Particularly, the type 6- and 7-bladed beta-propellers known to be associated with sequence and functional diversity are more common and associated with relatively more structural variations compared to the other beta-propeller types.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Guruprasad K,Dhamayanthi P

doi

10.1016/j.ijbiomac.2004.03.003

keywords:

subject

Has Abstract

pub_date

2004-04-01 00:00:00

pages

55-61

issue

1-2

eissn

0141-8130

issn

1879-0003

pii

S0141813004000078

journal_volume

34

pub_type

杂志文章

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