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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.
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 ]
Pages in category "Viral proteins" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. ...
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 p24 capsid protein (CA) is a 24 kDa protein fused to the C-terminus of MA in the unprocessed HIV Gag polyprotein. After viral maturation, CA forms the viral capsid. CA has two generally recognized domains, the C-terminal domain (CTD) and the N-terminal domain (NTD). The CA CTD and NTD have distinct roles during HIV budding and capsid structure.
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.
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 ...
Virokines are proteins encoded by some large DNA viruses that are secreted by the host cell and serve to evade the host's immune system.Such proteins are referred to as virokines if they resemble cytokines, growth factors, or complement regulators; the term viroceptor is sometimes used if the proteins resemble cellular receptors. [1]