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The viral DNA can either remain dormant in the nucleus or be transcribed into mRNA and translated by the host cell into the Gag-Pol polyprotein, which would then be cleaved into individual functional proteins (including a newly synthesized HIV-1 PR) by the mature HIV-1 PR. [9]
The genome and proteins of HIV (human immunodeficiency virus) have been the subject of extensive research since the discovery of the virus in 1983. [1] [2] "In the search for the causative agent, it was initially believed that the virus was a form of the Human T-cell leukemia virus (HTLV), which was known at the time to affect the human immune system and cause certain leukemias.
Reverse transcriptase (RT) is an enzyme that controls the replication of the genetic material of HIV and other retroviruses. [1] The enzyme has two enzymatic functions. Firstly it acts as a polymerase where it transcribes the single-stranded RNA genome into single-stranded DNA and subsequently builds a complementary strand o
Since CD4 receptor binding is the most obvious step in HIV infection, gp120 was among the first targets of HIV vaccine research. Efforts to develop HIV vaccines targeting gp120, however, have been hampered by the chemical and structural properties of gp120, which make it difficult for antibodies to bind to it. gp120 can also easily be shed from the surface of the virus and captured by T cells ...
In 2004, one study estimated the percentage of the American HIV positive population with some form of drug resistance to be 76.3%. [14] A more recent study in South Korea estimated that 50% of their HIV positive population had multi-drug resistant strains of HIV, while 10% had multi-class resistant strains.
A negative result rules out HIV exposure, while a positive one must be followed by an HIV-1/2 antibody differentiation immunoassay to detect which antibodies are present. This gives rise to four possible scenarios: 1. HIV-1 (+) & HIV-2 (−): HIV-1 antibodies detected; 2. HIV-1 (−) & HIV-2 (+): HIV-2 antibodies detected; 3.
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