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This file was derived from: Hiv replication cycle.gif This image has been created during "DensityDesign Integrated Course Final Synthesis Studio" at Polytechnic University of Milan, organized by DensityDesign Research Lab in 2016. Image is released under CC-BY-SA licence. Attribution goes to "Chiara Cirella, DensityDesign Research Lab".
The p24 capsid protein is the most abundant HIV protein with each virus containing approximately 1,500 to 3,000 p24 molecules. [1] It is the major structural protein within the capsid , and it is involved in maintaining the structural integrity of the virus and facilitating various stages of the viral life cycle, including viral entry into host ...
HIV is a retrovirus, which comprise a large and diverse family of RNA viruses that make a DNA copy of their RNA genome after infection of a host cell. An essential step in the replication cycle of HIV-1 and other retroviruses is the integration of this viral DNA into the host DNA. The RNA genome of progeny virions and the template for ...
The HIV-1 Rev response element (RRE) is a highly structured, ~350 nucleotide RNA segment present in the Env coding region of unspliced and partially spliced viral mRNAs.In the presence of the HIV-1 accessory protein Rev, HIV-1 mRNAs that contain the RRE can be exported from the nucleus to the cytoplasm for downstream events such as translation and virion packaging.
A reverse transcriptase (RT) is an enzyme used to convert RNA genome to DNA, a process termed reverse transcription.Reverse transcriptases are used by viruses such as HIV, COVID-19, and hepatitis B to replicate their genomes, by retrotransposon mobile genetic elements to proliferate within the host genome, and by eukaryotic cells to extend the telomeres at the ends of their linear chromosomes.
Rev is a transactivating protein that is essential to the regulation of HIV-1 (and other lentiviral) protein expression.A nuclear localization signal is encoded in the rev gene, which allows the Rev protein to be localized to the nucleus, where it is involved in the export of unspliced and incompletely spliced mRNAs.
Continuous HIV replication results in a state of generalized immune activation persisting throughout the chronic phase. [6] Immune activation, which is reflected by the increased activation state of immune cells and release of proinflammatory cytokines , results from the activity of several HIV gene products and the immune response to ongoing ...
T-tropic isolates, or syncitia-inducing (SI) strains replicate in primary CD4+ T-cells as well as in macrophages and use the alpha-chemokine receptor, CXCR4, for entry. [1] These strains are now called X4 viruses. [2] The alpha-chemokine SDF-1, a ligand for CXCR4, suppresses replication of T-tropic HIV-1 isolates. It does this by downregulating ...
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