Document Detail


Crowding, molecular volume and plasticity: An assessment involving crystallography, NMR and simulations.
MedLine Citation:
PMID:  23151785     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The discrepancy between the X-ray and NMR structures of Mycobacterium tuberculosis peptidyl-tRNA hydrolase in relation to the functionally important plasticity of the molecule led to molecular dynamics simulations. The X-ray and the NMR studies along with the simulations indicated an inverse correlation between crowding and molecular volume. A detailed comparison of proteins for which X-ray and the NMR structures appears to confirm this correlation. In consonance with the reported results of the investigations in cellular compartments and aqueous solution, the comparison indicates that the crowding results in compaction of the molecule as well as change in its shape, which could specifically involve regions of the molecule important in function. Crowding could thus influence the action of proteins through modulation of the functionally important plasticity of the molecule.
Authors:
M Selvaraj; Rais Ahmad; Umesh Varshney; M Vijayan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of biosciences     Volume:  37     ISSN:  0973-7138     ISO Abbreviation:  J. Biosci.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8100809     Medline TA:  J Biosci     Country:  India    
Other Details:
Languages:  eng     Pagination:  953-63     Citation Subset:  IM    
Affiliation:
Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012.
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