alexa In silico Homology Modeling of Prophenoloxidase activating factor Serine Proteinase Gene from the Haemocytes of Fenneropenaeus indicus | OMICS International | Abstract
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Journal of Proteomics & Bioinformatics
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Research Article

In silico Homology Modeling of Prophenoloxidase activating factor Serine Proteinase Gene from the Haemocytes of Fenneropenaeus indicus

Baskaralingam Vaseeharan* and Sivakama Valli . J

Department of Animal Health and Management, Alagappa University, Karaikudi-630 003, Tamil Nadu, India

*Corresponding Author:
Dr. B.Vaseeharan
Associate Professor & Head Department of
Animal Health and Management, Alagappa University
Karaikudi-630 003, Tamil Nadu, India
Tel: + 91 4565 225205, 225206, 225207
Fax: + 91 4565 225202
E-mail: [email protected]

Received Date: October 05, 2010; Accepted Date: December 28, 2011; Published Date: January 05, 2011

Citation: Vaseeharan B, Valli SJ (2011) In silico Homology Modeling of Prophenoloxidase activating factor Serine Proteinase Gene from the Haemocytes of Fenneropenaeus indicus. J Proteomics Bioinform 4: 053-057. doi: 10.4172/jpb.1000166

Copyright: © 2011 Vaseeharan B, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

In invertebrates, immune system consist of encapsulation, phagocytosis, and nodule formation while humoral responses includes clotting, synthesis of antimicrobial peptides, and activation of the Prophenoloxidase (proPO) system. Serine proteinases (SPs) constitute one of the largest families of proteolytic enzymes involved in the activation of Prophenoloxidase. The major feature of serine proteinase is interlinked by three pairs of conserved disulfide bridges. Although the exact function of the clip domain presently remains unclear, there are certain speculations about its function. The present study reports the three-dimensional structures of novel immune related gene serine proteinase predicted by in silico homology modelling studies. Physico-chemical characterization interprets properties such as pI, EC, AI, GRAVY and instability index and provides valuable data about this clip domain serine proteinase. Prediction of motifs, patterns, disulfide bridges and secondary structure were performed for functional characterization of the serine proteinases. Three dimensional structures for these proteins were not available as yet at PDB. Therefore, a homology model for this serine proteinase protein was developed. The modelling of the three dimensional structure of the proteins showed that models generated by Modeller9V8 were more acceptable in comparison to that by Swiss Model. The models were validated using protein structure checking tools PROCHECK and WHAT IF. The structures will provide a good foundation for functional analysis of experimentally derived crystal structures. The better results of the in silico modelling study are presented, and may help lead to the discovery of new synthetic immune related peptides or derivatives of serine proteinases that could be useful to understand the mechanism of serine proteinase involvement in the Prophenoloxidase activating system of crustaceans. The crystal structure prediction of the immune related proteins serine proteinase of shrimps will help to explore the other life sciences Pharmacokinetics and toxicology, Drug designing and chemo informatics etc.

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