RIR2_VACCA
ID RIR2_VACCA Reviewed; 319 AA.
AC O57175;
DT 07-DEC-2004, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-1998, sequence version 1.
DT 03-AUG-2022, entry version 91.
DE RecName: Full=Ribonucleoside-diphosphate reductase small chain;
DE EC=1.17.4.1;
DE AltName: Full=Ribonucleotide reductase small subunit;
GN OrderedLocusNames=MVA032L, ACAM3000_MVA_032;
OS Vaccinia virus (strain Ankara) (VACV).
OC Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes;
OC Chitovirales; Poxviridae; Chordopoxvirinae; Orthopoxvirus; Vaccinia virus.
OX NCBI_TaxID=126794;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=9601507; DOI=10.1006/viro.1998.9123;
RA Antoine G., Scheiflinger F., Dorner F., Falkner F.G.;
RT "The complete genomic sequence of the modified vaccinia Ankara strain:
RT comparison with other orthopoxviruses.";
RL Virology 244:365-396(1998).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Isolate Acambis 3000;
RA Esposito J.J., Frace M., Sammons S.A., Olsen-Rasmussen M.S., Osborne J.,
RA Khristova M., Wohlhueter R.M.;
RL Submitted (APR-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Ribonucleoside-diphosphate reductase holoenzyme provides the
CC precursors necessary for viral DNA synthesis. Allows virus growth in
CC non-dividing cells. Catalyzes the biosynthesis of deoxyribonucleotides
CC from the corresponding ribonucleotides (By similarity). {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-disulfide + a 2'-deoxyribonucleoside 5'-
CC diphosphate + H2O = [thioredoxin]-dithiol + a ribonucleoside 5'-
CC diphosphate; Xref=Rhea:RHEA:23252, Rhea:RHEA-COMP:10698, Rhea:RHEA-
CC COMP:10700, ChEBI:CHEBI:15377, ChEBI:CHEBI:29950, ChEBI:CHEBI:50058,
CC ChEBI:CHEBI:57930, ChEBI:CHEBI:73316; EC=1.17.4.1;
CC Evidence={ECO:0000255|PROSITE-ProRule:PRU10014};
CC -!- COFACTOR:
CC Name=Fe cation; Xref=ChEBI:CHEBI:24875; Evidence={ECO:0000250};
CC Note=Binds 2 iron ions per subunit. {ECO:0000250};
CC -!- PATHWAY: Genetic information processing; DNA replication.
CC -!- SUBUNIT: Heterotetramer composed of a homodimer of the large subunit
CC (R1) and a homodimer of the small subunit (R2). Larger multisubunit
CC protein complex are also active, composed of (R1)n(R2)n (By
CC similarity). {ECO:0000250}.
CC -!- INDUCTION: Expressed early in the viral replicative cycle.
CC -!- SIMILARITY: Belongs to the ribonucleoside diphosphate reductase small
CC chain family. {ECO:0000305}.
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DR EMBL; U94848; AAB96415.1; -; Genomic_DNA.
DR EMBL; AY603355; AAT10430.1; -; Genomic_DNA.
DR PIR; T30782; T30782.
DR SMR; O57175; -.
DR UniPathway; UPA00326; -.
DR Proteomes; UP000159908; Genome.
DR Proteomes; UP000172909; Genome.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0004748; F:ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor; IEA:UniProtKB-EC.
DR GO; GO:0009263; P:deoxyribonucleotide biosynthetic process; IEA:InterPro.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-UniPathway.
DR CDD; cd01049; RNRR2; 1.
DR Gene3D; 1.10.620.20; -; 1.
DR InterPro; IPR009078; Ferritin-like_SF.
DR InterPro; IPR012348; RNR-like.
DR InterPro; IPR033909; RNR_small.
DR InterPro; IPR030475; RNR_small_AS.
DR InterPro; IPR000358; RNR_small_fam.
DR PANTHER; PTHR23409; PTHR23409; 1.
DR Pfam; PF00268; Ribonuc_red_sm; 1.
DR SUPFAM; SSF47240; SSF47240; 1.
DR PROSITE; PS00368; RIBORED_SMALL; 1.
PE 2: Evidence at transcript level;
KW Deoxyribonucleotide synthesis; Early protein; Iron; Metal-binding;
KW Oxidoreductase.
FT CHAIN 1..319
FT /note="Ribonucleoside-diphosphate reductase small chain"
FT /id="PRO_0000190495"
FT ACT_SITE 108
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU10014"
FT BINDING 70
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU10014"
FT BINDING 101
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU10014"
FT BINDING 101
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 104
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU10014"
FT BINDING 163
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 197
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 200
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
SQ SEQUENCE 319 AA; 36947 MW; 0444D6A80EA0AD51 CRC64;
MEPILAPNPN RFVIFPIQYH DIWNMYKKAE ASFWTVEEVD ISKDINDWNK LTPDEKYFIK
HVLAFFAASD GIVNENLAER FCTEVQITEA RCFYGFQMAI ENIHSEMYSL LIDTYVKDSN
EKNYLFNAIE TMPCVKKKAD WAQKWIHDSA GYGERLIAFA AVEGIFFSGS FASIFWLKKR
GLMPGLTFSN ELISRDEGLH CDFACLMFKH LLHPPSEETV RSIITDAVSI EQEFLTAALP
VKLIGMNCEM MKTYIEFVAD RLISELGFKK IYNVTNPFDF MENISLEGKT NFFEKRVGEY
QKMGVMSQED NHFSLDVDF
