2m4h: Difference between revisions
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{{STRUCTURE_2m4h| PDB=2m4h | SCENE= }} | |||
===Solution structure of the Core Domain (10-76) of the Feline Calicivirus VPg protein=== | |||
{{ABSTRACT_PUBMED_23487472}} | |||
==Function== | |||
[[http://www.uniprot.org/uniprot/POLG_FCVF9 POLG_FCVF9]] NTPase presumably plays a role in replication. Despite having similarities with helicases, does not seem to display any helicase activity (By similarity). Viral genome-linked protein is covalently linked to the 5'-end of the positive-strand, negative-strand genomic RNAs and subgenomic RNA. Acts as a genome-linked replication primer. May recruit ribosome to viral RNA thereby promoting viral proteins translation (By similarity). Protease-polymerase p76 processes the polyprotein: Pro-Pol is first released by autocleavage, then all other proteins are cleaved. Cleaves host translation initiation factor eIF4G1 and eIF4G2 thereby inducing a shutdown of host protein synthesis. This shutdown may not prevent viral mRNA from being translated since viral Vpg replaces the cap. May cleave host polyadenylate-binding protein thereby inhibiting cellular translation. It is also a RNA-directed RNA polymerase which replicates genomic and antigenomic viral RNA by recognizing specific signals. Transcribes also a subgenomic mRNA by initiating RNA synthesis internally on antigenomic RNA. This sgRNA encodes for structural proteins. Catalyzes the covalent attachment VPg with viral RNAs (By similarity). | |||
==About this Structure== | |||
[[2m4h]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Feline_calicivirus_(strain_f9) Feline calicivirus (strain f9)]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2M4H OCA]. | |||
[[Category: Birtley, J R.]] | |||
[[Category: Curry, S.]] | |||
[[Category: Kwok, R N.]] | |||
[[Category: Leen, E N.]] | |||
[[Category: Marchant, J.]] | |||
[[Category: Matthews, S.]] | |||
[[Category: Prater, S N.]] | |||
[[Category: Simpson, P J.]] | |||
[[Category: Ns5]] | |||
[[Category: Viral protein]] | |||
[[Category: Vpg]] | |||