Pipeline for inferring protein function from dynamics using coarse-grained molecular mechanics forcefield

Bhadra, Pratiti and Pal, Debnath (2017) Pipeline for inferring protein function from dynamics using coarse-grained molecular mechanics forcefield. In: COMPUTERS IN BIOLOGY AND MEDICINE, 83 . pp. 134-142.

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Abstract

Dynamics is integral to the function of proteins, yet the use of molecular dynamics (MD) simulation as a technique remains under-explored for molecular function inference. This is more important in the context of genomics projects where novel proteins are determined with limited evolutionary information. Recently we developed a method to match the query protein's flexible segments to infer function using a novel approach combining analysis of residue fluctuation-graphs and auto-correlation vectors derived from coarse-grained (CG) MD trajectory. The method was validated on a diverse dataset with sequence identity between proteins as low as 3%, with high function-recall rates. Here we share its implementation as a publicly accessible web service, named DynFunc (Dynamics Match for Function) to query protein function from >= 1 mu s long CG dynamics trajectory information of protein subunits. Users are provided with the custom-developed coarse-grained molecular mechanics (CGMM) forcefield to generate the MD trajectories for their protein of interest. On upload of trajectory information, the DynFunc web server identifies specific flexible regions of the protein linked to putative molecular function. Our unique application does not use evolutionary information to infer molecular function from MD information and can, therefore, work for all proteins, including moonlighting and the novel ones, whenever structural information is available. Our pipeline is expected to be of utility to all structural biologists working with novel proteins and interested in moonlighting functions.

Item Type:	Journal Article
Publication:	COMPUTERS IN BIOLOGY AND MEDICINE
Additional Information:	Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre:	Division of Interdisciplinary Sciences > Computational and Data Sciences
Date Deposited:	25 May 2017 10:07
Last Modified:	11 Oct 2018 14:00
URI:	http://eprints.iisc.ac.in/id/eprint/57066

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