APOBEC3G and APOBEC3F rarely co-mutate the same HIV genome
نویسندگان
چکیده
منابع مشابه
Different interaction between HIV-1 Vif and its cellular target proteins APOBEC3G/APOBEC3F.
We examined a series of site-directed point mutants of human immunodeficiency virus type 1 (HIV-1) Vif for their interaction with cellular anti-viral factors APOBEC3G/APOBEC3F. Mutant viruses that display growth-defect in H9 cells did not counteract effectively APOBEC3G and/or APOBEC3F without exception, as monitored by single-cycle infectivity assays. While growth-defective mutants of Vif C-te...
متن کاملAPOBEC3F and APOBEC3G inhibit HIV-1 DNA integration by different mechanisms.
APOBEC3F (A3F) and APBOBEC3G (A3G) both are host restriction factors that can potently inhibit human immunodeficiency virus type 1 (HIV-1) replication. Their antiviral activities are at least partially mediated by cytidine deamination, which causes lethal mutations of the viral genome. We recently showed that A3G blocks viral plus-strand DNA transfer and inhibits provirus establishment in the h...
متن کاملAPOBEC3G and APOBEC3F Require an Endogenous Cofactor to Block HIV-1 Replication
APOBEC3G (A3G)/APOBEC3F (A3F) are two members of APOBEC3 cytidine deaminase subfamily. Although they potently inhibit the replication of vif-deficient HIV-1, this mechanism is still poorly understood. Initially, A3G/A3F were thought to catalyze C-to-U transitions on the minus-strand viral cDNAs during reverse transcription to disrupt the viral life cycle. Recently, it was found more likely that...
متن کاملBiochemical differentiation of APOBEC3F and APOBEC3G proteins associated with HIV-1 life cycle.
APOBEC3G and APOBEC3F are cytidine deaminase with duplicative cytidine deaminase motifs that restrict HIV-1 replication by catalyzing C-to-U transitions on nascent viral cDNA. Despite 60% protein sequence similarity, APOBEC3F and APOBEC3G have a different target consensus sequence for editing, and importantly, APOBEC3G has 10-fold higher anti-HIV activity than APOBEC3F. Thus, APOBEC3F and APOBE...
متن کاملAPOBEC3G restricts HIV-1 to a greater extent than APOBEC3F and APOBEC3DE in human primary CD4+ T cells and macrophages.
APOBEC3 proteins inhibit HIV-1 replication in experimental systems and induce hypermutation in infected patients; however, the relative contributions of several APOBEC3 proteins to restriction of HIV-1 replication in the absence of the viral Vif protein in human primary CD4(+) T cells and macrophages are unknown. We observed significant inhibition of HIV-1Δvif produced in 293T cells in the pres...
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ژورنال
عنوان ژورنال: Retrovirology
سال: 2012
ISSN: 1742-4690
DOI: 10.1186/1742-4690-9-113