THE HUMAN IMMUNE SYSTEM
AIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tuberculosis.
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Poliomyelitis.
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Syphilis.
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HIV
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Virus B hepatitis.
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Detailed explanation-1: -The gp120 molecule of HIV-1 is a glycoprotein that is part of the outer layer of the virus. It presents itself as viral membrane spikes consisting of 3 molecules of gp120 linked together and anchored to the membrane by gp41 protein.
Detailed explanation-2: -HIV GP120 protein (or gp120) is the name of the glycoprotein which forms the spikes sticking out of a HIV virus particle. HIV gp120 protein is essential for virus entry into cells as it plays a vital role in seeking out specific cell surface receptors for entry.
Detailed explanation-3: -Env extends from the surface of the HIV virus particle. The spike-shaped protein is “trimeric”-with 3 identical molecules, each with a cap-like region called glycoprotein 120 (gp120) and a stem called glycoprotein 41 (gp41) that anchors Env in the viral membrane.
Detailed explanation-4: -HIV has a particular affinity for the T4 helper lymphocytes and the gp120 envelope glycoprotein of HIV specifically binds to the CD4 molecule receptor site on the surface of the helper lymphocyte.