ID E9RG14_9INFA Unreviewed; 757 AA. AC E9RG14; DT 03-MAY-2011, integrated into UniProtKB/TrEMBL. DT 03-MAY-2011, sequence version 1. DT 08-JUN-2016, entry version 26. DE RecName: Full=RNA-directed RNA polymerase catalytic subunit {ECO:0000256|RuleBase:RU004330, ECO:0000256|SAAS:SAAS00509014}; DE EC=2.7.7.48 {ECO:0000256|RuleBase:RU004330, ECO:0000256|SAAS:SAAS00508944}; GN Name=PB1 {ECO:0000313|EMBL:BAJ83375.1}; OS Influenza A virus (A/goose/Zambia/09/2009(H11N9)). OC Viruses; ssRNA viruses; ssRNA negative-strand viruses; OC Orthomyxoviridae; Influenzavirus A. OX NCBI_TaxID=859135 {ECO:0000313|EMBL:BAJ83375.1}; RN [1] {ECO:0000313|EMBL:BAJ83375.1} RP NUCLEOTIDE SEQUENCE. RC STRAIN=A/goose/Zambia/09/2009 {ECO:0000313|EMBL:BAJ83375.1}; RX PubMed=21367986; DOI=10.1099/vir.0.030403-0; RA Simulundu E., Ishii A., Igarashi M., Mweene A.S., Suzuki Y., RA Hang'ombe B.M., Namangala B., Moonga L., Manzoor R., Ito K., RA Nakamura I., Sawa H., Sugimoto C., Kida H., Simkonda C., Chansa W., RA Chulu J., Takada A.; RT "Characterization of influenza A viruses isolated from wild waterfowl RT in Zambia."; RL J. Gen. Virol. 92:1416-1427(2011). CC -!- FUNCTION: RNA-dependent RNA polymerase which is responsible for CC replication and transcription of virus RNA segments. The CC transcription of viral mRNAs occurs by a unique mechanism called CC cap-snatching. 5' methylated caps of cellular mRNAs are cleaved CC after 10-13 nucleotides by PA. In turn, these short capped RNAs CC are used as primers by PB1 for transcription of viral mRNAs. CC During virus replication, PB1 initiates RNA synthesis and copy CC vRNA into complementary RNA (cRNA) which in turn serves as a CC template for the production of more vRNAs. CC {ECO:0000256|SAAS:SAAS00509027}. CC -!- CATALYTIC ACTIVITY: Nucleoside triphosphate + RNA(n) = diphosphate CC + RNA(n+1). {ECO:0000256|RuleBase:RU004330, CC ECO:0000256|SAAS:SAAS00605060}. CC -!- SUBUNIT: Influenza RNA polymerase is composed of three subunits: CC PB1, PB2 and PA. Interacts (via N-terminus) with PA (via C- CC terminus). Interacts (via C-terminus) with PB2 (via N-terminus); CC this interaction is essential for transcription initiation. CC {ECO:0000256|SAAS:SAAS00508961}. CC -!- SIMILARITY: Belongs to the influenza viruses polymerase PB1 CC family. {ECO:0000256|SAAS:SAAS00565435}. CC -!- SIMILARITY: Contains RdRp catalytic domain. CC {ECO:0000256|SAAS:SAAS00605059}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AB569533; BAJ83375.1; -; Viral_cRNA. DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW. DR GO; GO:0003968; F:RNA-directed RNA polymerase activity; IEA:UniProtKB-KW. DR GO; GO:0039523; P:suppression by virus of host RNA polymerase II activity; IEA:UniProtKB-KW. DR GO; GO:0006351; P:transcription, DNA-templated; IEA:InterPro. DR GO; GO:0039694; P:viral RNA genome replication; IEA:InterPro. DR GO; GO:0019083; P:viral transcription; IEA:UniProtKB-KW. DR InterPro; IPR007099; RNA-dir_pol_NSvirus. DR InterPro; IPR001407; RNA_pol_PB1_influenza. DR Pfam; PF00602; Flu_PB1; 1. DR PIRSF; PIRSF000827; RdRPol_OMV; 1. DR PROSITE; PS50525; RDRP_SSRNA_NEG_SEG; 1. PE 3: Inferred from homology; KW Eukaryotic host gene expression shutoff by virus KW {ECO:0000256|SAAS:SAAS00509101}; KW Eukaryotic host transcription shutoff by virus KW {ECO:0000256|SAAS:SAAS00509023}; KW Host gene expression shutoff by virus {ECO:0000256|SAAS:SAAS00509081}; KW Host-virus interaction {ECO:0000256|SAAS:SAAS00509044}; KW Inhibition of host RNA polymerase II by virus KW {ECO:0000256|SAAS:SAAS00508975}; KW Nucleotide-binding {ECO:0000256|SAAS:SAAS00605058}; KW Nucleotidyltransferase {ECO:0000256|SAAS:SAAS00605055}; KW RNA-directed RNA polymerase {ECO:0000256|RuleBase:RU004330, KW ECO:0000256|SAAS:SAAS00605053}; KW Transferase {ECO:0000256|SAAS:SAAS00605061}; KW Viral RNA replication {ECO:0000256|SAAS:SAAS00605045}; KW Viral transcription {ECO:0000256|SAAS:SAAS00509109}. FT DOMAIN 286 483 RdRp catalytic. {ECO:0000259|PROSITE: FT PS50525}. SQ SEQUENCE 757 AA; 86380 MW; A6C00BA2EDB5DAC6 CRC64; MDVNPTLLFL KVPAQNAIST TFPYTGDPPY SHGTGTGYTM DTVNRTHQYS EKGKWTTNTE TGAPQLNPID GPLPEDNEPS GYAQTDCVLE AMAFLEESHP GIFENSCLET MEVVQQTRVD KLTQGRQTYD WTLNRNQPAA TALANTIEVF RSNGLTANES GRLIDFLKDV MESMDKEEME ITTHFQRKRR VRDNVTKKMV TQRTIGKKKQ RLNKRSYLIR ALTLNTMTKD AERGKLKRRA IATPGMQIRG FVYFVETLAR SICEKLEQSG LPVGGNEKKA KLANVVRKMM TNSQDTELSF TITGDNTKWN ENQNPRMFLA MITYITRNQP EWFRNVLSIA PIMFSNKMAR LGKGYMFESK SMKLRTQIPA EMLANIDLKY FNESTRKKVE KIRPLLIDGT ASLSPGMMMG MFNMLSTVLG VSILNLGQKR YTKTTYWWDG LQSSDDFALI VNAPNHEGIQ AGVDRFYRTC KLVGINMSKK KSYINRTGTF EFTSFFYRYG FVANFSMELP SFGVSGINES ADMSIGVTVI KNNMINNDLG PATAQMALQL FIKDYRYTYR CHRGDTQIQT RRSFELKKLW EQTRSKAGLL VSDGGPNLYN IRNLHIPEVC LKWELMDEDY QGRLCNPLNP FVSHKEIESV NNAVVMPAHG PAKSMEYDAV ATTHSWIPKR NRSILNTSQR GILEDEQMYQ KCCSLFEKFF PSSSYRRPVG ISSMVEAMVS RARIDARIDF ESGRIKKEEF AEIMKICSTI EELRRQK //