RIR2_SHV21
ID RIR2_SHV21 Reviewed; 305 AA.
AC Q01038;
DT 01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1993, sequence version 1.
DT 03-AUG-2022, entry version 112.
DE RecName: Full=Ribonucleoside-diphosphate reductase small subunit {ECO:0000255|HAMAP-Rule:MF_04028};
DE EC=1.17.4.1 {ECO:0000255|HAMAP-Rule:MF_04028};
DE AltName: Full=Ribonucleotide reductase small subunit {ECO:0000255|HAMAP-Rule:MF_04028};
GN Name=RIR2 {ECO:0000255|HAMAP-Rule:MF_04028}; Synonyms=60, EELF3;
OS Saimiriine herpesvirus 2 (strain 11) (SaHV-2) (Herpesvirus saimiri).
OC Viruses; Duplodnaviria; Heunggongvirae; Peploviricota; Herviviricetes;
OC Herpesvirales; Herpesviridae; Gammaherpesvirinae; Rhadinovirus.
OX NCBI_TaxID=10383;
OH NCBI_TaxID=9521; Saimiri sciureus (Common squirrel monkey).
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=1321287; DOI=10.1128/jvi.66.8.5047-5058.1992;
RA Albrecht J.-C., Nicholas J., Biller D., Cameron K.R., Biesinger B.,
RA Newman C., Wittmann S., Craxton M.A., Coleman H., Fleckenstein B.,
RA Honess R.W.;
RT "Primary structure of the herpesvirus saimiri genome.";
RL J. Virol. 66:5047-5058(1992).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1314457; DOI=10.1016/0042-6822(92)90759-i;
RA Nicholas J., Cameron K.R., Coleman H., Newman C., Honess R.W.;
RT "Analysis of nucleotide sequence of the rightmost 43 kbp of herpesvirus
RT saimiri (HVS) L-DNA: general conservation of genetic organization between
RT HVS and Epstein-Barr virus.";
RL Virology 188:296-310(1992).
RN [3]
RP REVIEW.
RX PubMed=18990579; DOI=10.1016/j.tibs.2008.09.008;
RA Lembo D., Brune W.;
RT "Tinkering with a viral ribonucleotide reductase.";
RL Trends Biochem. Sci. 34:25-32(2009).
CC -!- FUNCTION: Ribonucleoside-diphosphate reductase holoenzyme provides the
CC precursors necessary for viral DNA synthesis. Allows virus growth in
CC non-dividing cells, as well as reactivation from latency in infected
CC hosts. Catalyzes the biosynthesis of deoxyribonucleotides from the
CC corresponding ribonucleotides. {ECO:0000255|HAMAP-Rule:MF_04028}.
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|HAMAP-Rule:MF_04028};
CC -!- COFACTOR:
CC Name=Fe cation; Xref=ChEBI:CHEBI:24875;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_04028};
CC -!- PATHWAY: Genetic information processing; DNA replication.
CC {ECO:0000255|HAMAP-Rule:MF_04028}.
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.
CC {ECO:0000255|HAMAP-Rule:MF_04028}.
CC -!- SUBCELLULAR LOCATION: Host membrane {ECO:0000255|HAMAP-Rule:MF_04028};
CC Single-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_04028}.
CC -!- SIMILARITY: Belongs to the ribonucleoside diphosphate reductase small
CC chain family. {ECO:0000255|HAMAP-Rule:MF_04028}.
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DR EMBL; X64346; CAA45683.1; -; Genomic_DNA.
DR EMBL; M86409; AAA46136.1; -; Genomic_DNA.
DR RefSeq; NP_040262.1; NC_001350.1.
DR SMR; Q01038; -.
DR GeneID; 1682509; -.
DR KEGG; vg:1682509; -.
DR UniPathway; UPA00326; -.
DR Proteomes; UP000000587; Genome.
DR GO; GO:0033644; C:host cell membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004748; F:ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor; IEA:UniProtKB-UniRule.
DR GO; GO:0009186; P:deoxyribonucleoside diphosphate metabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009263; P:deoxyribonucleotide biosynthetic process; IEA:InterPro.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-UniRule.
DR CDD; cd01049; RNRR2; 1.
DR Gene3D; 1.10.620.20; -; 1.
DR HAMAP; MF_04028; HSV_RIR2; 1.
DR InterPro; IPR009078; Ferritin-like_SF.
DR InterPro; IPR034715; HSV_RIR2.
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 3: Inferred from homology;
KW DNA replication; Host membrane; Iron; Membrane; Metal-binding;
KW Oxidoreductase; Reference proteome; Transmembrane; Transmembrane helix.
FT CHAIN 1..305
FT /note="Ribonucleoside-diphosphate reductase small subunit"
FT /id="PRO_0000190510"
FT TRANSMEM 150..170
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT ACT_SITE 101
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 64
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 94
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 94
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 97
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 157
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 191
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
FT BINDING 194
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028"
SQ SEQUENCE 305 AA; 35167 MW; 484B019D1755B92D CRC64;
MDSVKKYLYT CDHVGFLELT KETWKNRWFP SQVPLQGDVC CVDMLNERDL EFYKFLFTFL
GMAEKLVNIN IEDLLSQFDS HDISHYYAEQ MAMENIHGKV YANILNMLFK NNITEVYSYA
CDIMNDSALQ EKLRWLNGRV TEASDKAEKI LLFLLVEGIF FISSFFSIGL FRVRGIMNGI
CLANDYIARD EMLHTSAAAL LYNTMTKSSE RPSEDWIYKL FREAVEVEFK FIAAKGYGVS
LVNVHEIRQF LQATADRILE SINLNPIYGS LPPENCPLAY TSSTKSVNFF ERDNSDYTGT
LTNDL
