Document Detail


LpxA: a natural nanotube.
MedLine Citation:
PMID:  20564049     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
UDP-N-acetylglucosamine 3-O-acyltransferase is a protein with a left-handed parallel beta-helix, which is a natural nanotube. They are associated with unusual high stability. To identify the reason behind the structural stability of beta-helical nanotubular structure, we have performed a total of 4 mus molecular dynamics simulations of the protein in implicit solvent at four different temperatures and monitored the unfolding pathway. The correlation in movement between different regions of the nanotubular structure has been identified from the dynamical cross-correlation map and contribution of some specific residues towards unfolding transition has been identified by principal component analysis. Difference in stability of the three loop regions has also been characterized. Construction of the unfolding conformational energy landscape identifies the probable intermediates that can appear in the unfolding pathway of the protein.
Authors:
Atanu Das; Chaitali Mukhopadhyay
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biopolymers     Volume:  93     ISSN:  0006-3525     ISO Abbreviation:  Biopolymers     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-07-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372525     Medline TA:  Biopolymers     Country:  United States    
Other Details:
Languages:  eng     Pagination:  845-53     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Wiley Periodicals, Inc.
Affiliation:
Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India.
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