RDRP_ROTHK
ID RDRP_ROTHK Reviewed; 1088 AA.
AC Q9QNB3;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 29-SEP-2021, entry version 57.
DE RecName: Full=RNA-directed RNA polymerase;
DE EC=2.7.7.48;
DE AltName: Full=Protein VP1;
OS Rotavirus A (strain RVA/Human/Japan/KU/1995/G1P1A[8]) (RV-A).
OC Viruses; Riboviria; Orthornavirae; Duplornaviricota; Resentoviricetes;
OC Reovirales; Reoviridae; Sedoreovirinae; Rotavirus; Rotavirus A.
OX NCBI_TaxID=10952;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RA Taniguchi K.;
RL Submitted (JAN-1999) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: RNA-directed RNA polymerase that is involved in both
CC transcription and genome replication. Together with VP3 capping enzyme,
CC forms an enzyme complex positioned near the channels situated at each
CC of the five-fold vertices of the core. Following infection, the
CC outermost layer of the virus is lost, leaving a double-layered particle
CC (DLP) made up of the core and VP6 shell. VP1 then catalyzes the
CC transcription of fully conservative plus-strand genomic RNAs that are
CC extruded through the DLP's channels into the cytoplasm where they
CC function as mRNAs for translation of viral proteins. One copy of each
CC of the viral (+)RNAs is also recruited during core assembly, together
CC with newly synthesized polymerase complexes and VP2. The polymerase of
CC these novo-formed particles catalyzes the synthesis of complementary
CC minus-strands leading to dsRNA formation. To do so, the polymerase
CC specifically recognizes and binds 4 bases 5'-UGUG-3' in the conserved
CC 3'-sequence of plus-strand RNA templates. VP2 presumably activates the
CC autoinhibited VP1-RNA complex to coordinate packaging and genome
CC replication. Once dsRNA synthesis is complete, the polymerase switches
CC to the transcriptional mode, thus providing secondary transcription (By
CC similarity). {ECO:0000255|PROSITE-ProRule:PRU00539}.
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:0000255|PROSITE-ProRule:PRU00539};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000305};
CC -!- SUBUNIT: Interacts with VP3 (Potential). Interacts with VP2; this
CC interaction activates VP1. Interacts with NSP5; this interaction is
CC probably necessary for the formation of functional virus factories.
CC Interacts with NSP2; this interaction is weak (By similarity).
CC {ECO:0000250, ECO:0000305}.
CC -!- SUBCELLULAR LOCATION: Virion {ECO:0000305}. Note=Attached inside the
CC inner capsid as a minor component. Also found in spherical cytoplasmic
CC structures, called virus factories, that appear early after infection
CC and are the site of viral replication and packaging (By similarity).
CC {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the reoviridae RNA-directed RNA polymerase
CC family. {ECO:0000305}.
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DR EMBL; AB022765; BAA84962.1; -; mRNA.
DR SMR; Q9QNB3; -.
DR PRIDE; Q9QNB3; -.
DR Proteomes; UP000001458; Genome.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR GO; GO:0003723; F:RNA 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:0019079; P:viral genome replication; IEA:InterPro.
DR Gene3D; 1.10.10.1990; -; 1.
DR InterPro; IPR043502; DNA/RNA_pol_sf.
DR InterPro; IPR042032; RNA-dir_pol_4-hel_dom.
DR InterPro; IPR001795; RNA-dir_pol_luteovirus.
DR InterPro; IPR007097; RNA-dir_pol_reovirus.
DR InterPro; IPR022071; Rotavirus_VP1_C.
DR Pfam; PF02123; RdRP_4; 1.
DR Pfam; PF12289; Rotavirus_VP1; 1.
DR SUPFAM; SSF56672; SSF56672; 1.
DR PROSITE; PS50523; RDRP_DSRNA_REO; 1.
PE 2: Evidence at transcript level;
KW Magnesium; Nucleotide-binding; Nucleotidyltransferase; RNA-binding;
KW RNA-directed RNA polymerase; Transferase; Viral RNA replication; Virion.
FT CHAIN 1..1088
FT /note="RNA-directed RNA polymerase"
FT /id="PRO_0000368040"
FT DOMAIN 501..687
FT /note="RdRp catalytic"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00539"
SQ SEQUENCE 1088 AA; 125017 MW; 214CA10B55825508 CRC64;
MGKYNLILSE YLSFVYNSQS AVQIPIYYSS NSELETRCIE FHAKCVDNSK KGLSLKPLFE
EYKDVTDNAT LLSILSYSYD KYNAVERKLV SYAKGKPLEA DLTANELDYE NNKITSELFQ
SAEEYTDSLM DPAILTSLSS NLNAVMFWLE RHSNDIADAN KIYKRRLDLF TIVASTINKY
GVPRHNEKYR YEYEVMKDKP YYLVTWANSS IEMLMSVFSH EDYLIAKELI VLSYSNRSTL
AKLVSSPMSI LVALIDINGT FITNEELELE FSDKYVKAIV PDQTFDELQE MINNMKKIGL
VDIPRMIQEW LIDCSLEKFT LMSKIYSWSF HVGFRKQKMI DAALDQLKTE YTKDVDDEMY
NEYTMLIRDE IVKMLEIPVK HDDHLLRDSE LAGLLSMSSA SNGESRQIKF GRKTIFSTKK
NMHVMDDIAH GKYTPGVIPP VNVDKPIPLG RRDVPGRRTR IIFILPYEYF IAQHAVVEKM
LLYAKHTREY AEFYSQSNQL LSYGDVTRFL SSNSMVLYTD VSQWDSSQHN TQPFRKGIIM
GLDMLSNMTN DPKVVQALNL YKQTQINLMD SYVQIPDGNV IKKNQYGAVA SGEKQTKAAN
SIANLALIKT VLSRIANKYS FITKIIRVSG DDNYAVLQFN TDLTKQMIQD VSNDVRYIYF
RMNAKVKALV STVGIEIAKR YLAGGKIFFR AGINLLNNEK RGQSTQWDQA AILYSNYIVN
KLRGFETDRE FILTKIIQMT SVAITGSLRL FPSERVLTTN STFKVFDSED FIIEYGTTDD
EVYIQRAFMS LSSQKSGIAD EIASSQTFKN YVSKLSDQLL VSKNVIVSKG IAVTEKAKLN
SYAPIYLEKR RAQISALLTM LQKPVSFKSN KNTINEILRD IKPFFVTTED NLPIQYRKFM
PTLPDNVQYV IQCIGSRTYQ IEDSGSKSSI SKLISKYSVY KPSIEELYKV ISLREQEIQL
YLVSLGVPLV DASAYVASRI YSQDKYKILE SYVYNLLSIN YGCYQLFDFN SPDLEKLIRI
PFKGKIPAVT FILHLYAKLE IINYAIKNRA WISVFCNYPK SEMIKLWKKM WSITALRSPY
TSANFFQD