Nucleoprotein

UniProtKB accession:  O36307

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Encapsidates the genome protecting it from nucleases (Probable). The encapsidated genomic RNA is termed the nucleocapsid (NC) and serves as template for transcription and replication (Probable). The nucleocapsid has a left-handed helical structure (By similarity). As a trimer, specifically binds and acts as a chaperone to unwind the panhandle structure formed by the viral RNA (vRNA) termini (By similarity). Involved in the transcription and replication initiation of vRNA by mediating primer annealing (By similarity). Plays a role in cap snatching by sequestering capped RNAs in P bodies for use by the viral RdRp during transcription initiation (By similarity). Substitutes for the cellular cap-binding complex (eIF4F) to preferentially facilitate the translation of capped mRNAs (By similarity). Initiates the translation by specifically binding to the cap and 40S ribosomal subunit (By similarity). Prevents the viral glycoprotein N (Gn) from autophagy-dependent breakdown maybe by blocking autophagosome formation (By similarity). Inhibits host EIF2AK2/PKR dimerization to prevent PKR-induced translational shutdown in cells and thus the activation of the antiviral state (PubMed:25410857). Inhibits IFN signaling responses directed by the dsRNA sensors RIGI and IFIH1/MDA5, probably by interacting with host E3 ubiquitin ligase TRIM21 (PubMed:24549848). As a consequence, TBK1-directed IRF3 phosphorylation and TBK1 autophosphorylation are inhibited (PubMed:24549848, PubMed:30867297). Also displays sequence-unspecific DNA endonuclease activity (By similarity).