ID   RIR2_ASFP4              Reviewed;         327 AA.
AC   P0C8I1;
DT   25-NOV-2008, integrated into UniProtKB/Swiss-Prot.
DT   25-NOV-2008, sequence version 1.
DT   27-MAR-2024, entry version 54.
DE   RecName: Full=Ribonucleoside-diphosphate reductase small chain;
DE            EC=1.17.4.1;
DE   AltName: Full=Ribonucleotide reductase small subunit;
GN   OrderedLocusNames=Pret-056;
OS   African swine fever virus (isolate Tick/South Africa/Pretoriuskop Pr4/1996)
OS   (ASFV).
OC   Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes;
OC   Asfuvirales; Asfarviridae; Asfivirus; African swine fever virus.
OX   NCBI_TaxID=561443;
OH   NCBI_TaxID=6937; Ornithodoros (relapsing fever ticks).
OH   NCBI_TaxID=85517; Phacochoerus aethiopicus (Warthog).
OH   NCBI_TaxID=41426; Phacochoerus africanus (Warthog).
OH   NCBI_TaxID=273792; Potamochoerus larvatus (Bushpig).
OH   NCBI_TaxID=9823; Sus scrofa (Pig).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Kutish G.F., Rock D.L.;
RT   "African swine fever virus genomes.";
RL   Submitted (MAR-2003) 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   -!- 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 in the early phase of the viral replicative cycle.
CC       {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the ribonucleoside diphosphate reductase small
CC       chain family. {ECO:0000305}.
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DR   EMBL; AY261363; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   SMR; P0C8I1; -.
DR   Proteomes; UP000000859; 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:UniProtKB-KW.
DR   CDD; cd01049; RNRR2; 1.
DR   Gene3D; 1.10.620.20; Ribonucleotide Reductase, subunit A; 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; RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE SMALL CHAIN; 1.
DR   PANTHER; PTHR23409:SF18; RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE SUBUNIT M2; 1.
DR   Pfam; PF00268; Ribonuc_red_sm; 1.
DR   SUPFAM; SSF47240; Ferritin-like; 1.
DR   PROSITE; PS00368; RIBORED_SMALL; 1.
PE   3: Inferred from homology;
KW   Deoxyribonucleotide synthesis; Early protein; Iron; Metal-binding;
KW   Oxidoreductase.
FT   CHAIN           1..327
FT                   /note="Ribonucleoside-diphosphate reductase small chain"
FT                   /id="PRO_0000355533"
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         164
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         198
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         201
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   327 AA;  38958 MW;  7739D9CC17B31494 CRC64;
     MEELLIENSH RFTIFPIQHP ECWNWYKKLE SLTWTAQEVD MCKDIDDWEA MPKSQREFYK
     QILAFFVVAD EIVIENLLTN FMREIKVKEV LYFYTMQAAQ ECVHSEAYSI QVKTLIPDEK
     EQQRIFSGIE KHPIIKKMAQ WVRQWMDPTK NSLGERLVGF AAVEGILFQN HFVAIQFLKE
     QNIMPGLVSY NEFISRDEGV HCSFACFLIS NYVYNIPEER IIHKILKEAV ELVDEFINYA
     FDKARGRVPG FSKEMLFQYI RYFTDNLCFM MQCKSIYKVG NPFPQMTKFF LNEVEKTNFF
     ELRPTQYQNC VKDDAFAFKL FLNDDDF
//