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Expression and purification of soluble HIV-1 envelope glycoprotein gp160 mutant from Saccharomyces cerevisiae

Paper ID Volume ID Publish Year Pages File Format Full-Text
21743 43238 2009 6 PDF Available
Title
Expression and purification of soluble HIV-1 envelope glycoprotein gp160 mutant from Saccharomyces cerevisiae
Abstract

Here we report the expression of HIV-1 gp160 and its mutated proteins in Saccharomyces cerevisiae. Two strong hydrophobic regions, aa 511–537 and aa 679–703, were predicted by GCG Wisconsin Package software and removed to investigate the solubility of the mutated gp160 (gp160Δ12). The results showed that gp160Δ12 assumes high solubility as to be present in supernatant of cell lysate exclusively. The mutant exists as trimeric form in solutions via some inter-molecule disulfide bonds, which can be associated to monomer with the reduced reaction of DTT. The fermentation procedure was optimized to get high cell density yield and expression level as ∼ 10 mg/L. After purification with electro elution, gp160Δ12 was checked as glycosylation form by Endo-H deglycosylating catalysis. The ELISA performed with a panel of human sera suggests that the purified gp160Δ12 shares some determinants with gp120 and gp41, but exposes some distinct epitopes that react with early HIV-infected antibody. Thus, we may provide a novel antigen for immunodetection assay, vaccine candidate, and other relative research purposes.

Keywords
HIV; gp160; Saccharomyces cerevisiae; Solubility; Antigenicity
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Expression and purification of soluble HIV-1 envelope glycoprotein gp160 mutant from Saccharomyces cerevisiae
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 108, Issue 1, July 2009, Pages 5–10
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us