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Comparison and Phylogenetic Analysis of HIV retroviral Gag Poly Protein Precursors

Author Affiliations

  • 1 Faculty of Biological Sciences, Department of Biotechnology, University of South Asia, Lahore, Pakistan

Int. Res. J. Biological Sci., Volume 5, Issue (9), Pages 32-37, September,10 (2016)


The human immunodeficiency virus type I (HIV-1) is a member of retrovirus family, initially synthesized as the central and core domain of the Gag polyprotein. These polyprotein precursors are produced from the unspliced genomic RNA on free ribosomes within the cytoplasm. The entire process of membrane binding, particle assembly and maturation may occur sometimes in the absence of certain viral envelope proteins. Gag molecules generally gather and capture the viral RNA. After this, it migrates towards the inner cell membrane and assemble into immature viral particles of the cell. They are mainly involved in assembly of virus like particles. Analysis of retroviruses including HIV, SIV and their precursors reveals new insights to study their proper functioning and mechanism of action. In this study, sequence alignments were performed to analyze the similarity and phylogenetic analysis helped to know the evolutionary relationships among these protein precursors. For, this various bioinformatics tools was used for analysis which will help to study their function and also the structural level predictions.


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