ID Q08IG0_9INFA Unreviewed; 188 AA.
AC Q08IG0;
DT 31-OCT-2006, integrated into UniProtKB/TrEMBL.
DT 31-OCT-2006, sequence version 1.
DT 24-JAN-2024, entry version 57.
DE RecName: Full=RNA-directed RNA polymerase catalytic subunit {ECO:0000256|ARBA:ARBA00020035};
DE EC=2.7.7.48 {ECO:0000256|ARBA:ARBA00012494};
DE Flags: Fragment;
GN Name=PB1 {ECO:0000313|EMBL:BAF33426.1};
OS Influenza A virus (A/tern/Australia/1402/2004(H2N5)).
OC Viruses; Riboviria; Orthornavirae; Negarnaviricota; Polyploviricotina;
OC Insthoviricetes; Articulavirales; Orthomyxoviridae; Alphainfluenzavirus;
OC Alphainfluenzavirus influenzae; Influenza A virus.
OX NCBI_TaxID=405050 {ECO:0000313|EMBL:BAF33426.1};
RN [1] {ECO:0000313|EMBL:BAF33426.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=A/tern/Australia/1402/04 {ECO:0000313|EMBL:BAF33426.1};
RA Kida H., Sakoda Y.;
RT "Phylogenetic analysis of H2N5 influenza viruses isolated from shorebirds
RT in Australia.";
RL Submitted (SEP-2006) 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 -!- 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; AB275404; BAF33426.1; -; Genomic_RNA.
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:0016020; C:membrane; IEA:UniProtKB-KW.
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 InterPro; IPR007099; RNA-dir_pol_NSvirus.
DR InterPro; IPR001407; RNA_pol_PB1_influenza.
DR Pfam; PF00602; Flu_PB1; 1.
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}; Membrane {ECO:0000256|SAM:Phobius};
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 Transferase {ECO:0000256|ARBA:ARBA00022484};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius};
KW Viral RNA replication {ECO:0000256|ARBA:ARBA00022953};
KW Viral transcription {ECO:0000256|ARBA:ARBA00023314}.
FT TRANSMEM 20..38
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 1..94
FT /note="RdRp catalytic"
FT /evidence="ECO:0000259|PROSITE:PS50525"
FT NON_TER 1
FT /evidence="ECO:0000313|EMBL:BAF33426.1"
FT NON_TER 188
FT /evidence="ECO:0000313|EMBL:BAF33426.1"
SQ SEQUENCE 188 AA; 21329 MW; 46852BAE6AC0662B CRC64;
EKIRPLLIEG TASLSPGMMM GMFNMLSTVL GVSILNLGQK RYTKTTYWWD GLQSSDDFAL
IVNAPNHEGI QAGVDRFYRT CKLVGINMSK KKSYINRTGT FEFTSFFYRY GFVANFSMEL
PSFGVSGINE SADMSIGVTV IKNNMINNDL GPATAQMALQ LFIKDYRYTY RCHRGDTQIQ
TRRSFELK
//
