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The term viral protein refers to both the products of the genome of a virus and any host proteins incorporated into the viral particle. Viral proteins are grouped according to their functions, and groups of viral proteins include structural proteins , nonstructural proteins , regulatory proteins , and accessory proteins. [ 1 ]
VPg (viral protein genome-linked) is a protein that is covalently attached to the 5′ end of positive strand viral RNA and acts as a primer during RNA synthesis in a variety of virus families including Picornaviridae, Potyviridae, Astroviridae and Caliciviridae.
Pages in category "Viral proteins" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. ...
For example, the HIV-1 viroporin Vpu promotes viral budding through interactions with CD4 and tetherin, though the precise molecular mechanism of this interaction is not known. [6] [7] [9] The JC polyomavirus agnoprotein functions as a viroporin in addition to other roles mediated through interactions with viral proteins such as major capsid ...
Vpr is a Human immunodeficiency virus gene and protein product. [1] [2] Vpr stands for "Viral Protein R".Vpr, a 96 amino acid 14-kDa protein, plays an important role in regulating nuclear import of the HIV-1 pre-integration complex, and is required for virus replication and enhanced gene expression from provirus in dividing or non-dividing cells such as T cells or macrophages. [3]
During assembly of the bacteriophage (phage) T4 virion, the structural proteins encoded by the phage genes interact with each other in a characteristic sequence. Maintaining an appropriate balance in the amounts of each of these structural proteins produced during viral infection appears to be critical for normal phage T4 morphogenesis. [4]
The equivalent regions are variable in the PNGases F and contain either long loops or insertions. By contrast, jelly-roll domains of DUF2961 proteins contain an insertion of short β-hairpins upstream of the G and G' strands of the double jelly roll fold. Importantly, DUF2961 family proteins form trimers resembling viral capsomers. [25]
The nidoviral papain-like protease (PLPro or PLP) is a papain-like protease protein domain encoded in the genomes of nidoviruses.It is expressed as part of a large polyprotein from the ORF1a gene and has cysteine protease enzymatic activity responsible for proteolytic cleavage of some of the N-terminal viral nonstructural proteins within the polyprotein.
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