ID RIR2_PSHV1 Reviewed; 313 AA. AC Q6UDJ1; DT 05-APR-2011, integrated into UniProtKB/Swiss-Prot. DT 05-JUL-2004, sequence version 1. DT 24-JAN-2024, entry version 85. 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=UL40; OS Psittacid herpesvirus 1 (isolate Amazon parrot/-/97-0001/1997) (PsHV-1) OS (Pacheco's disease virus). OC Viruses; Duplodnaviria; Heunggongvirae; Peploviricota; Herviviricetes; OC Herpesvirales; Orthoherpesviridae; Alphaherpesvirinae; Iltovirus; OC Iltovirus psittacidalpha1; Psittacid alphaherpesvirus 1. OX NCBI_TaxID=670426; OH NCBI_TaxID=152276; Amazona oratrix (yellow-headed parrot). RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RX PubMed=16873243; DOI=10.1128/jvi.00134-06; RA Thureen D.R., Keeler C.L. Jr.; RT "Psittacid herpesvirus 1 and infectious laryngotracheitis virus: RT Comparative genome sequence analysis of two avian alphaherpesviruses."; RL J. Virol. 80:7863-7872(2006). 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; Evidence={ECO:0000255|HAMAP- CC 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}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AY372243; AAQ73719.1; -; Genomic_DNA. DR RefSeq; NP_944413.1; NC_005264.1. DR SMR; Q6UDJ1; -. DR GeneID; 2657018; -. DR KEGG; vg:2657018; -. DR Proteomes; UP000006840; Segment. DR GO; GO:0033644; C:host cell membrane; IEA:UniProtKB-SubCell. DR GO; GO:0016020; C:membrane; IEA:UniProtKB-KW. 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 GO; GO:0019046; P:release from viral latency; IEA:UniProtKB-KW. DR CDD; cd01049; RNRR2; 1. DR Gene3D; 1.10.620.20; Ribonucleotide Reductase, subunit A; 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; 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 DNA replication; Host membrane; Iron; Membrane; Metal-binding; KW Oxidoreductase; Reference proteome; Transmembrane; Transmembrane helix; KW Viral latency; Viral reactivation from latency. FT CHAIN 1..313 FT /note="Ribonucleoside-diphosphate reductase small subunit" FT /id="PRO_0000406808" FT TRANSMEM 157..177 FT /note="Helical" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT ACT_SITE 105 FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 68 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 98 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 98 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 101 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 163 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 197 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" FT BINDING 200 FT /ligand="Fe cation" FT /ligand_id="ChEBI:CHEBI:24875" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_04028" SQ SEQUENCE 313 AA; 36261 MW; 56F6F5771B40648D CRC64; MSATEFLASE YYYTGECPDM RELRDLSIAN NWNEFELCYA RDEKDVDCLT EDECDFYKFV FCFLAAADDL VNVNLDNLVT LFPQKDIQHY YAEQIRIETV HSRTYSAVQL VFFRNDAIAR DRYVLEAVKD GAIRRKIDWL SRIQNEGDEL TLPEKYILMI LIEGIFFVSS FAAISYLRRH SIFQVTCQSN DLISRDETIH TTASCCIYNN WLKGHPKPSV KRIHQLFKEA VEIECDFLVA RAPKAARLID IDAIQSFVRF TANRWLSMIG VPTIYDDPAP DPTFPLALMS LEKNVNFFEH RSTAYSGNLV NDL //