ID M1RXP2_9INFA Unreviewed; 757 AA.
AC M1RXP2;
DT 01-MAY-2013, integrated into UniProtKB/TrEMBL.
DT 01-MAY-2013, sequence version 1.
DT 27-MAR-2024, entry version 53.
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};
GN Name=PB1 {ECO:0000313|EMBL:AGG23625.1};
OS Influenza A virus (A/American wigeon/Interior
OS Alaska/10BM05537R0/2010(mixed)).
OC Viruses; Riboviria; Orthornavirae; Negarnaviricota; Polyploviricotina;
OC Insthoviricetes; Articulavirales; Orthomyxoviridae; Alphainfluenzavirus;
OC Alphainfluenzavirus influenzae; Influenza A virus.
OX NCBI_TaxID=1283664 {ECO:0000313|EMBL:AGG23625.1, ECO:0000313|Proteomes:UP000105694};
RN [1] {ECO:0000313|Proteomes:UP000105694}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RG The NIAID Influenza Genome Sequencing Consortium;
RL Submitted (FEB-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AGG23625.1, ECO:0000313|Proteomes:UP000105694}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=A/American wigeon/Interior Alaska/10BM05537R0/2010
RC {ECO:0000313|EMBL:AGG23625.1};
RA Wentworth D.E., Dugan V., Halpin R., Lin X., Bera J., Ghedin E.,
RA Fedorova N., Overton L., Tsitrin T., Stockwell T., Amedeo P., Bishop B.,
RA Chen H., Edworthy P., Gupta N., Katzel D., Li K., Schobel S.,
RA Shrivastava S., Thovarai V., Wang S., Runstadler J., Lindberg M.,
RA Huettmann F., Meixell B., Peterson T., Schultz J.F., Brady C., Amundson C.,
RA Gingrich J.P., Gildehaus L.A., Dillon D., Aldehoff F., Felker E.P.,
RA Frame L.L., Schmidt J.C., Moore J.R., Hahn M.K., Gerdes K.E., Bao Y.,
RA Sanders R., Dernovoy D., Kiryutin B., Lipman D.J., Tatusova T.;
RT "The NIAID Influenza Genome Sequencing Project.";
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}.
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DR EMBL; CY135241; AGG23625.1; -; Viral_cRNA.
DR Proteomes; UP000105694; Genome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0030430; C:host cell cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0042025; C:host cell nucleus; 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 InterPro; IPR007099; RNA-dir_pol_NSvirus.
DR InterPro; IPR001407; RNA_pol_PB1_influenza.
DR Pfam; PF00602; Flu_PB1; 2.
DR PIRSF; PIRSF000827; RdRPol_OMV; 2.
DR PROSITE; PS50525; RDRP_SSRNA_NEG_SEG; 1.
PE 4: Predicted;
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 286..562
FT /note="RdRp catalytic"
FT /evidence="ECO:0000259|PROSITE:PS50525"
FT REGION 47..82
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 47..65
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 757 AA; 86131 MW; 81CCFA5C94F0F590 CRC64;
MDVNPTLLFL KVPAQNAIST TFPYTGDPPY SHGTGTGYTM DTVNRTHQYS EKGRWTTNTE
TGAPQLNPID GPLPEDNEPS GYAQTDCVLE AMAFLEESHP GIFENSCLET MEIVQQTRVD
KLTQGRQTYD WTLNRNQPAA TALANTIEVF RSNGLTANES GRLIDFLKDV MESMDKEEME
ITTHFQRKRR VRDNMTKKMV TQRTIGKKKQ RLNKRSYLIR ALTLNTMTKD AERGKLKRRA
IATPGMQIRG FVYFVETLAR SICEKLEQSG LPVGGNEKKA KLANVVRKMM TNSQDTELSF
TITGDNTKWN ENQNPRMFLA MITYXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXQ AGVDRFYRTC KLVGINMSKK
KSYINRTGTF EFTSFFYRYG FVANFSMELP SFGVSGINES ADMSIGVTVI KNNMINNDLG
PATAQMALQL FIKDYRYTYR CHRGDTQIQT RRSFELKKLW EQTRSKAGLL VSDGGPNLYN
IRNLHIPEVC LKWELMDEDY QGRLCNPLNP FVSHKEIESV NNAVVMPAHG PAKSMEYDAV
ATTHSWIPKR NRSILNTSQR GILEDEQMYQ KCCNLFEKFF PSSSYRRPVG ISSMVEAMVS
RARIDARIDF ESGRIKKEEF AEIMKICSTI EELRRQK
//
