نتایج جستجو برای: vpx
تعداد نتایج: 227 فیلتر نتایج به سال:
SIVmnd was isolated from mandrills in Gabon in 1989 soon after the existence of simian counterparts of HIV such as SIVmac and SIVagm was known. Since then the SIVmnd has been long considered as an independent SIV lineage and the natural host is the mandrill. However this initial finding turned out to be more complex by the recent finding of new SIV isolated from mandrills living in northern man...
The detection of multiple curved lanes is still a challenge for Driver Assistance Systems (DAS) today, due to interferences such as road markings and shadows casted by road side structures and vehicles. The vanishing point (Vp) contains the global information of the road image. Hence, Vp based lane detection algorithms are quite insensitive to interference. However, when curved lanes are assume...
Two cellular factors are currently known to modulate lentiviral infection specifically in myeloid cells: SAMHD1 and APOBEC3A (A3A). SAMHD1 is a deoxynucleoside triphosphohydrolase that interferes with viral infection mostly by limiting the intracellular concentrations of dNTPs, while A3A is a cytidine deaminase that has been described to edit incoming vDNA. The restrictive phenotype of myeloid ...
SAMHD1 is a host protein responsible, at least in part, for the inefficient infection of dendritic, myeloid, and resting T cells by HIV-1. Interestingly, HIV-2 and SIVsm viruses are able to counteract SAMHD1 by targeting it for proteasomal degradation using their Vpx proteins. It has been proposed that SAMHD1 is a dGTP-dependent deoxynucleoside triphosphohydrolase (dNTPase) that restricts HIV-1...
Restriction of HIV-1 in myeloid-lineage cells is attributed in part to the nucleotidase activity of the SAM-domain and HD-domain containing protein (SAMHD1), which depletes free nucleotides, blocking reverse transcription. In the same cells, the Vpx protein of HIV-2 and most SIVs counteracts SAMHD1. Both Type I and II interferons may stimulate SAMHD1 transcription. The contributions of SAMHD1 t...
Template switching can occur during the reverse transcription of HIV-1. Deoxynucleotide triphosphate (dNTP) concentrations have been biochemically shown to impact HIV-1 reverse transcriptase (RT)-mediated strand transfer. Lowering the dNTP concentrations promotes RT pausing and RNA template degradation by RNase H activity of the RT, subsequently leading to strand transfer. Terminally differenti...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید