ID M9Q6F6_9INFA Unreviewed; 743 AA.
AC M9Q6F6;
DT 26-JUN-2013, integrated into UniProtKB/TrEMBL.
DT 26-JUN-2013, sequence version 1.
DT 27-MAR-2024, entry version 44.
DE RecName: Full=RNA-directed RNA polymerase catalytic subunit {ECO:0000256|ARBA:ARBA00020035, ECO:0000256|RuleBase:RU004330};
DE EC=2.7.7.48 {ECO:0000256|ARBA:ARBA00012494, ECO:0000256|RuleBase:RU004330};
DE Flags: Fragment;
GN Name=PB1 {ECO:0000313|EMBL:AGH99706.1};
OS Influenza A virus (A/Taiwan/929/1981(H3N2)).
OC Viruses; Riboviria; Orthornavirae; Negarnaviricota; Polyploviricotina;
OC Insthoviricetes; Articulavirales; Orthomyxoviridae; Alphainfluenzavirus;
OC Alphainfluenzavirus influenzae; Influenza A virus.
OX NCBI_TaxID=1043066 {ECO:0000313|EMBL:AGH99706.1};
RN [1] {ECO:0000313|EMBL:AGH99706.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=A/Taiwan/929/1981 {ECO:0000313|EMBL:AGH99706.1};
RX PubMed=23613982;
RA Lin J.H., Chiu S.C., Lin Y.C., Cheng J.C., Wu H.S., Salemi M., Liu H.F.;
RT "Exploring the molecular epidemiology and evolutionary dynamics of
RT influenza A virus in taiwan.";
RL PLoS ONE 8:E61957-E61957(2013).
RN [2] {ECO:0000313|EMBL:AGH99706.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=A/Taiwan/929/1981 {ECO:0000313|EMBL:AGH99706.1};
RA Lin J.-H., Chiu S.-C., Lin Y.-C., Cheng J.-C., Wu H.-S., Salemi M.,
RA Liu H.-F.;
RL Submitted (MAR-2013) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: RNA-dependent RNA polymerase which is responsible for
CC replication and transcription of virus RNA segments. The transcription
CC of viral mRNAs occurs by a unique mechanism called cap-snatching. 5'
CC methylated caps of cellular mRNAs are cleaved after 10-13 nucleotides
CC by PA. In turn, these short capped RNAs are used as primers by PB1 for
CC transcription of viral mRNAs. During virus replication, PB1 initiates
CC RNA synthesis and copy vRNA into complementary RNA (cRNA) which in turn
CC serves as a template for the production of more vRNAs.
CC {ECO:0000256|ARBA:ARBA00002148}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a ribonucleoside 5'-triphosphate + RNA(n) = diphosphate +
CC RNA(n+1); Xref=Rhea:RHEA:21248, Rhea:RHEA-COMP:14527, Rhea:RHEA-
CC COMP:17342, ChEBI:CHEBI:33019, ChEBI:CHEBI:61557, ChEBI:CHEBI:140395;
CC EC=2.7.7.48; Evidence={ECO:0000256|RuleBase:RU004330};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496}. Host
CC cytoplasm {ECO:0000256|ARBA:ARBA00004192}. Host nucleus
CC {ECO:0000256|ARBA:ARBA00004147}. Nucleus
CC {ECO:0000256|ARBA:ARBA00004123}.
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; KC738237; AGH99706.1; -; Viral_cRNA.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0030430; C:host cell cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR GO; GO:0003723; F:RNA binding; IEA:InterPro.
DR GO; GO:0003968; F:RNA-dependent RNA polymerase activity; IEA:UniProtKB-KW.
DR GO; GO:0039523; P:suppression by virus of host mRNA transcription via inhibition of RNA polymerase II activity; IEA:UniProtKB-KW.
DR GO; GO:0039694; P:viral RNA genome replication; IEA:InterPro.
DR GO; GO:0019083; P:viral transcription; IEA:UniProtKB-KW.
DR Gene3D; 6.10.140.720; -; 1.
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 Eukaryotic host gene expression shutoff by virus
KW {ECO:0000256|ARBA:ARBA00023247};
KW Eukaryotic host transcription shutoff by virus
KW {ECO:0000256|ARBA:ARBA00022731};
KW Host cytoplasm {ECO:0000256|ARBA:ARBA00023200};
KW Host gene expression shutoff by virus {ECO:0000256|ARBA:ARBA00022995};
KW Host nucleus {ECO:0000256|ARBA:ARBA00022562};
KW Host-virus interaction {ECO:0000256|ARBA:ARBA00022581};
KW Inhibition of host RNA polymerase II by virus
KW {ECO:0000256|ARBA:ARBA00023103};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695};
KW Phosphoprotein {ECO:0000256|ARBA:ARBA00022553};
KW RNA-directed RNA polymerase {ECO:0000256|ARBA:ARBA00022484,
KW ECO:0000256|RuleBase:RU004330};
KW Transferase {ECO:0000256|ARBA:ARBA00022484, ECO:0000256|RuleBase:RU004330};
KW Viral RNA replication {ECO:0000256|ARBA:ARBA00022953};
KW Viral transcription {ECO:0000256|ARBA:ARBA00023314}.
FT DOMAIN 273..470
FT /note="RdRp catalytic"
FT /evidence="ECO:0000259|PROSITE:PS50525"
FT REGION 37..67
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 37..52
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT NON_TER 1
FT /evidence="ECO:0000313|EMBL:AGH99706.1"
FT NON_TER 743
FT /evidence="ECO:0000313|EMBL:AGH99706.1"
SQ SEQUENCE 743 AA; 84812 MW; 0F95356EFAD7F036 CRC64;
AQNAISTTFP YTGDPPYSHG TGTGYTMDTV NRTHQYSEKG KWTTNTETGA PQLNPIDGPL
PEDNEPSGYA QTDCVLEAMA FLEESHPGIF ENSCLETMEV VQQTRVDKLT QGRQTYDWTL
NRNQPAATAL ANTIEVFRSN GLTANESGRL IDFLKDVMES MDKEEIEITT HFQRKRRVRD
NMTKKMVTQR TIGKKKQRVN KRSYLIRALT LNTMTKDAER GKLKRRAIAT PGMQIRGFVY
FVETLARSIC EKLEQSGLPV GGNEKKAKLA NVVRKMMTNS QDTELSFTIT GDNTKWNENQ
NPRMFLAMIT YITKNQPEWF RNILSIAPIM FSNKMARLGK GYMFESKRMK LRTQIPAEML
ASIDLKYFNE STRKKIEKIR PLLIDGTASL SPGMMMGMFN MLSTVLGVSI LNLGQKKYTK
TTYWWDGLQS SDDFALIVNA PNHEGIQAGV DRFYRTCKLV GINMSKKKSY INRTGTFEFT
SFFYRYGFVA NFSMELPSFG VSGINESADM SIGVTVIKNN MINNDLGPAT AQMALQLFIK
DYRYTYRCHR GDTQIQTRRS FELKKLWEQT QSKAGLLVSD GGPNLYNIRN LHIPEVCLKW
ELMDEDYQGR LCNPLNPFVS HKEIESVNNA VVMPAHGPAK SMEYDAVATT HSWIPKRNRS
ILNTSQRGIL EDEQMYQKCC NLFEKFFPSS SYRRPVGISS MVEAMVSRAR IDARIDFESG
RIKKEEFSEI MKICSTIEEL RRQ
//
