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ISSN: 0974-276X

Journal of Proteomics & Bioinformatics
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Research Article

Polypeptide Rearrangement Hypothesis and It's Implication in Genetic Diversity

Hicham Bouabe*

Bacteriology Department, Max von Pettenkofer Institute, Pettenkoferstr. 9a, Munich, 80336, GERMANY

*Corresponding Author:
Dr. Hicham Bouabe
Max von Pettenkofer Institute
Pettenkoferstr. 9a
Munich, 80336, GERMANY
Tel : 49-89-51605437
Fax : 49-89-51605223
E-mail: [email protected]

Received Date: August 25, 2008; Accepted Date: September 25, 2008; Published Date: October 03, 2008

Citation: Bouabe H (2008) Polypeptide Rearrangement Hypothesis and Its Implication in Genetic Diversity. J Proteomics Bioinform 1: 336-346. doi: 10.4172/jpb.1000042

Copyright: © 2008 Bouabe H. 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

Protein splicing is a post-translational process, in which a nested intervening sequence (intein) is spliced out of the interior of a polypeptide precursor, and the flanking protein fragments (exteins) are ligated to form a mature protein. This process was identified in yeast, bacteria and the plant jackbean, and recently for MHC class I antigen processing in vertebrates. Thus, it seems very likely that, besides antigens, functional proteins could be synthesized by post-translational splicing in vertebrates. Protein splicing indicates that proteins, after their translation, can evolve and change/exchange their sequences. The availability of natural mechanisms of protein splicing leads to the assumption that such and/or similar mechanisms might exist enabling in vivo polypeptide rearrangement in a large scale and in a diverse manner. Thus, I propose here a polypeptide rearrangement hypothesis that describes the generation of new proteins (mosaic proteins) through exchange or reorganization of defined polypeptide sequences (modules) between or within translated proteins. The implications of this hypothesis in genetic diversity, protein antigenic properties and diseases are discussed.

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