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Human endogenous retrovirus K endopeptidase (EC 3.4.23.50, human endogenous retrovirus K10 endopeptidase, endogenous retrovirus HERV-K10 putative protease, human endogenous retrovirus K retropepsin, HERV K10 endopeptidase, HERV K10 retropepsin, HERV-K PR, HERV-K protease, HERV-K113 protease, human endogenous retrovirus K113 protease, human retrovirus K10 retropepsin) is an enzyme derived from ...
A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. [2] After invading a host cell's cytoplasm, the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus retro (backward).
Integrase inhibitors (INIs) are a class of antiretroviral drug designed to block the action of integrase, a viral enzyme that inserts the viral genome into the DNA of the host cell. Since integration is a vital step in retroviral replication, blocking it can halt further spread of the virus.
Dendrogram of various classes of endogenous retroviruses. Endogenous retroviruses (ERVs) are endogenous viral elements in the genome that closely resemble and can be derived from retroviruses. They are abundant in the genomes of jawed vertebrates, and they comprise up to 5–8% of the human genome (lower estimates of ~1%). [1] [2]
This results from mutations in the N-terminal polymerase domain of the reverse transcriptase that reduce the enzyme's affinity or ability to bind to the drug . A prime example for this mechanism is the M184V mutation that confers resistance to lamivudine (3TC) and emtricitabine (FTC).
Retroviral integrase (IN) is an enzyme produced by a retrovirus (such as HIV) that integrates (forms covalent links between) its genetic information into that of the host cell it infects. [1] Retroviral INs are not to be confused with phage integrases ( recombinases ) used in biotechnology , such as λ phage integrase, as discussed in site ...
Env genes are found in LTR retrotransposon types Ty1-copia (Pseudoviridae), Ty3-gypsy (Metaviridae) and BEL/Pao. [9] [8] They encode glycoproteins on the retrovirus envelope needed for entry into the host cell. Retroviruses can move between cells whereas LTR retrotransposons can only move themselves into the genome of the same cell. [10]
Human betaretrovirus (HBRV), also known as Human mammary tumor virus, or Mouse mammary tumor-like virus is the human homologue of the Mouse mammary tumor virus (MMTV). The nomenclature for Human betaretrovirus was introduced following characterization of infection in patient with autoimmune liver disease suggesting the virus is not solely found in mice nor exclusively implicated in the ...