HIV-1, 2

HIV-1 envelope conjugated to HIV-2 gp36 Recombinant
Cat. No.
BT23502
Source
Escherichia Coli.
Synonyms
Appearance
Sterile filtered colorless clear solution.
Purity

Greater than 90.0% as determined by SDS-PAGE.

Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

HIV-1,2 recombinant- E.Coli derived recombinant 27 kDa protein contains the C- terminus of gp120 and most of gp41. The protein is conjugated to a 23 amino acids synthetic peptide derived from gp36 of HIV-2.

Product Specs

Introduction
HIV-1 and HIV-2, while both retroviruses causing AIDS, exhibit differences in RNA packaging and disease progression. HIV-1 indiscriminately packages RNA, making it more prone to mutation, while HIV-2 preferentially packages its own Gag protein mRNA. Transmission routes for both types are similar, involving exposure to infected bodily fluids. However, HIV-2 progresses slower, with a less infectious initial stage but increasing infectivity over time. Notably, HIV-2 exhibits lower pathogenicity, enhanced immune control, and some CD4 independence. Despite sequence and phenotypic variations, their envelope structures are similar, both forming 6-helix bundles for membrane fusion. However, HIV-1 forms more stable bundles, while HIV-2 fuses at lower temperatures, independent of calcium or target cell factors.
Description

This recombinant HIV-1,2 protein, expressed in E. Coli, comprises the C-terminal region of gp120 and most of gp41 from HIV-1, conjugated to a 23 amino acid synthetic peptide from HIV-2's gp36.

Physical Appearance
The product appears as a clear, colorless solution that has been sterilized by filtration.
Formulation
The protein is supplied in a buffer of 100mM sodium phosphate, pH 6.0, containing 0.05% sodium dodecyl sulfate (SDS).
Purity

The purity of the HIV-1,2 protein is greater than 90%, as assessed by SDS-polyacrylamide gel electrophoresis (SDS-PAGE).

Stability
For short-term storage, HIV-1,2 remains stable at 4°C for up to 1 week. However, for extended periods, it should be stored below -18°C. Repeated freeze-thaw cycles should be avoided to maintain product integrity.
Applications
The HIV-1,2 antigen is suitable for use in enzyme-linked immunosorbent assays (ELISA) and Western blots. It serves as an excellent antigen for the early detection of HIV seroconversion with minimal specificity issues.
Source
Escherichia Coli.
Specificity
Immunoreactive with all sera of HIV-1, HIV type O & HIV-2 infected individuals.

Product Science Overview

Introduction

The human immunodeficiency virus (HIV) is a complex retrovirus that has two main types: HIV-1 and HIV-2. Both types have distinct genetic and structural differences, but they share similar mechanisms of infection and replication. The envelope glycoproteins of these viruses play a crucial role in the virus’s ability to infect host cells. The HIV-1 envelope glycoprotein is composed of gp120 and gp41, while the HIV-2 envelope glycoprotein consists of gp125 and gp36 .

HIV-1 Envelope Glycoprotein

The HIV-1 envelope glycoprotein is a trimeric complex composed of three gp120 and three gp41 molecules. Gp120 is responsible for binding to the CD4 receptor on the surface of host cells, which is the first step in the viral entry process. After binding to CD4, gp120 undergoes a conformational change that allows it to interact with a co-receptor, usually CCR5 or CXCR4. This interaction triggers further conformational changes in gp41, which then mediates the fusion of the viral and host cell membranes, allowing the viral RNA to enter the host cell .

HIV-2 Envelope Glycoprotein

The HIV-2 envelope glycoprotein is similarly structured, with gp125 serving the role of gp120 in HIV-1, and gp36 serving the role of gp41. Gp125 binds to the CD4 receptor and co-receptors, facilitating the initial steps of viral entry. Gp36 then mediates the fusion of the viral and host cell membranes. One notable difference between HIV-1 and HIV-2 is that HIV-2 is generally less pathogenic and has a slower rate of disease progression .

Recombinant HIV-1 Envelope Conjugated to HIV-2 gp36

The recombinant HIV-1 envelope conjugated to HIV-2 gp36 is a chimeric protein that combines elements of both HIV-1 and HIV-2 envelope glycoproteins. This recombinant protein is designed to leverage the immunogenic properties of both gp41 (from HIV-1) and gp36 (from HIV-2). The goal of creating such a recombinant protein is to develop more effective vaccines and therapeutic strategies that can target conserved regions of the virus, potentially offering broader protection against different HIV strains .

Applications and Significance
  1. Vaccine Development: The recombinant HIV-1 envelope conjugated to HIV-2 gp36 is being explored as a potential vaccine candidate. By combining conserved epitopes from both HIV-1 and HIV-2, researchers aim to elicit a robust immune response that can neutralize a wide range of HIV variants.
  2. Therapeutic Strategies: This recombinant protein can also be used in the development of therapeutic antibodies and other antiviral agents. By targeting conserved regions of the virus, these therapies may be more effective in preventing viral escape and resistance.
  3. Diagnostic Tools: The recombinant protein can be used in diagnostic assays to detect antibodies against HIV-1 and HIV-2. This can improve the accuracy of HIV testing and help in monitoring the immune response in vaccinated or infected individuals .

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