ID D9ZYG9_9INFA Unreviewed; 757 AA. AC D9ZYG9; DT 05-OCT-2010, integrated into UniProtKB/TrEMBL. DT 05-OCT-2010, sequence version 1. DT 20-DEC-2017, entry version 37. DE RecName: Full=RNA-directed RNA polymerase catalytic subunit {ECO:0000256|HAMAP-Rule:MF_04065}; DE EC=2.7.7.48 {ECO:0000256|HAMAP-Rule:MF_04065}; DE AltName: Full=Polymerase basic protein 1 {ECO:0000256|HAMAP-Rule:MF_04065}; DE Short=PB1 {ECO:0000256|HAMAP-Rule:MF_04065}; DE AltName: Full=RNA-directed RNA polymerase subunit P1 {ECO:0000256|HAMAP-Rule:MF_04065}; GN Name=PB1 {ECO:0000256|HAMAP-Rule:MF_04065, GN ECO:0000313|EMBL:ADG59471.1}; OS Influenza A virus (A/chicken/Xinjiang/17/2005(H5N1)). OC Viruses; ssRNA viruses; ssRNA negative-strand viruses; OC Orthomyxoviridae; Influenzavirus A. OX NCBI_TaxID=762400 {ECO:0000313|EMBL:ADG59471.1, ECO:0000313|Proteomes:UP000168133}; RN [1] {ECO:0000313|EMBL:ADG59471.1, ECO:0000313|Proteomes:UP000168133} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=A/chicken/Xinjiang/17/2005 {ECO:0000313|EMBL:ADG59471.1}; RX PubMed=20538856; DOI=10.1128/JVI.00413-10; RA Li Y., Shi J., Zhong G., Deng G., Tian G., Ge J., Zeng X., Song J., RA Zhao D., Liu L., Jiang Y., Guan Y., Bu Z., Chen H.; RT "Continued evolution of H5N1 influenza viruses in wild birds, domestic RT poultry, and humans in China from 2004 to 2009."; RL J. Virol. 84:8389-8397(2010). 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 copies CC vRNA into complementary RNA (cRNA) which in turn serves as a CC template for the production of more vRNAs. {ECO:0000256|HAMAP- CC Rule:MF_04065}. CC -!- CATALYTIC ACTIVITY: Nucleoside triphosphate + RNA(n) = diphosphate CC + RNA(n+1). {ECO:0000256|HAMAP-Rule:MF_04065, CC ECO:0000256|RuleBase:RU004330, 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|HAMAP-Rule:MF_04065}. CC -!- SUBCELLULAR LOCATION: Host nucleus {ECO:0000256|HAMAP- CC Rule:MF_04065}. Host cytoplasm {ECO:0000256|HAMAP-Rule:MF_04065}. CC -!- PTM: Phosphorylated by host PRKCA. {ECO:0000256|HAMAP- CC Rule:MF_04065}. CC -!- SIMILARITY: Belongs to the influenza viruses polymerase PB1 CC family. {ECO:0000256|HAMAP-Rule:MF_04065, CC ECO:0000256|SAAS:SAAS00565435}. 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; HM172399; ADG59471.1; -; Viral_cRNA. DR Proteomes; UP000168133; Genome. DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW. DR GO; GO:0003968; F:RNA-directed 5'-3' RNA polymerase 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 HAMAP; MF_04065; INFV_RDRP; 1. 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 Complete proteome {ECO:0000313|Proteomes:UP000168133}; KW Eukaryotic host gene expression shutoff by virus {ECO:0000256|HAMAP- KW Rule:MF_04065}; KW Eukaryotic host transcription shutoff by virus {ECO:0000256|HAMAP- KW Rule:MF_04065}; Host cytoplasm {ECO:0000256|HAMAP-Rule:MF_04065}; KW Host gene expression shutoff by virus {ECO:0000256|HAMAP- KW Rule:MF_04065}; Host nucleus {ECO:0000256|HAMAP-Rule:MF_04065}; KW Host-virus interaction {ECO:0000256|HAMAP-Rule:MF_04065}; KW Inhibition of host RNA polymerase II by virus {ECO:0000256|HAMAP- KW Rule:MF_04065}; KW Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_04065, KW ECO:0000256|SAAS:SAAS00605058}; KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_04065, KW ECO:0000256|SAAS:SAAS00605055}; KW Phosphoprotein {ECO:0000256|HAMAP-Rule:MF_04065}; KW RNA-directed RNA polymerase {ECO:0000256|HAMAP-Rule:MF_04065, KW ECO:0000256|RuleBase:RU004330, ECO:0000256|SAAS:SAAS00605053}; KW Transferase {ECO:0000256|HAMAP-Rule:MF_04065, KW ECO:0000256|SAAS:SAAS00605061}; KW Viral RNA replication {ECO:0000256|HAMAP-Rule:MF_04065, KW ECO:0000256|SAAS:SAAS00605045}; KW Viral transcription {ECO:0000256|HAMAP-Rule:MF_04065}. FT DOMAIN 286 483 RdRp catalytic. {ECO:0000259|PROSITE: FT PS50525}. FT REGION 249 256 Promoter-binding site. FT {ECO:0000256|HAMAP-Rule:MF_04065}. FT MOTIF 187 195 Nuclear localization signal. FT {ECO:0000256|HAMAP-Rule:MF_04065}. FT MOTIF 203 216 Nuclear localization signal. FT {ECO:0000256|HAMAP-Rule:MF_04065}. SQ SEQUENCE 757 AA; 86371 MW; 8B0AAE352646CE79 CRC64; MDVNPTLLFL KVPVQNAIST TFPYTGDPPY SHGTGTGYTM DTVNRTHQYS EKGKWTTNTE TGAPQLNPID GPLPEDNEPS GYAQTDCVLE AMAFLEESHP GIFENSCLET MEIVQQTRVD KLTQGRQTYD WTLNRNQPAA TALANTIEIF RSNGLTANES GRLIDFLKDV MESMDKEEME ITTHFQRKRR VRDNMTKKMV TQRTIGKKKQ RLNKKSYLIR ALTLNTMTKD AERGKLKRRA IATPGMQIRG FVYFVETLAR SICEKLEQSG LPVGGNEKKA KLANVVRKMM TNSQDTELSF TITGDNTKWN ENQNPRMFLA MITYITRNQP EWFRNVLSIA PIMFSNKMAR LGKGYMFESK SMKLRTQIPA EMLANIDLKY FNELTKKKIE KIRPLLIDGT ASLSPGMMMG MFNMLSTVLG VSILNLGQKR YTKTTYWWDG LQSSDDFALI VNAPNHEGIQ AGVDRFYRTC KLVGINMSKK KSYINRTGTF EFTSFFYRYG FVANFSMELP SLGVSGINES ADMSIGVTVI KNNMINNDLG PATAQMALQL FIKDYRYTYR CHRGDTQIQT RRSFELKKLW EQTRSKAGLL VSDGGPNLYN IRNLHIPEAG LKWELMDEDY QGRLCNPLNP FVSHKEIESV NNAVVMPAHG PAKSMEYDAV ATTHSWIPKR NRSILNTSQR GILEDEQMYQ KCCNLFEKFF PSSSYRRPVG ISSMVEAMVS RARIDARIDF ESGRIKKEEF AEIMKICSTI EELRRQK //