RIR1_VAR67
ID RIR1_VAR67 Reviewed; 771 AA.
AC P0DSV1; P32984;
DT 16-OCT-2019, integrated into UniProtKB/Swiss-Prot.
DT 16-OCT-2019, sequence version 1.
DT 03-AUG-2022, entry version 6.
DE RecName: Full=Ribonucleoside-diphosphate reductase large subunit;
DE EC=1.17.4.1;
DE AltName: Full=Ribonucleotide reductase large subunit;
GN ORFNames=I4L, K4L, ORF3L;
OS Variola virus (isolate Human/India/Ind3/1967) (VARV) (Smallpox virus).
OC Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes;
OC Chitovirales; Poxviridae; Chordopoxvirinae; Orthopoxvirus.
OX NCBI_TaxID=587200;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=8109158; DOI=10.1016/0168-1702(93)90093-3;
RA Shchelkunov S.N., Blinov V.M., Resenchuk S.M., Totmenin A.V.,
RA Sandakhchiev L.S.;
RT "Analysis of the nucleotide sequence of a 43 kbp segment of the genome of
RT variola virus India-1967 strain.";
RL Virus Res. 30:239-258(1993).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=8383392; DOI=10.1016/0168-1702(93)90110-9;
RA Shchelkunov S.N., Blinov V.M., Totmenin A.V., Marennikova S.S.,
RA Kolykhalov A.A., Frolov I.V., Chizhikov V.E., Gytorov V.V., Gashikov P.V.,
RA Belanov E.F., Belavin P.A., Resenchuk S.M., Andzhaparidze O.G.,
RA Sandakhchiev L.S.;
RT "Nucleotide sequence analysis of variola virus HindIII M, L, I genome
RT fragments.";
RL Virus Res. 27:25-35(1993).
RN [3]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=8384129; DOI=10.1016/0014-5793(93)80041-r;
RA Shchelkunov S.N., Blinov V.M., Sandakhchiev L.S.;
RT "Genes of variola and vaccinia viruses necessary to overcome the host
RT protective mechanisms.";
RL FEBS Lett. 319:80-83(1993).
CC -!- FUNCTION: Provides the precursors necessary for DNA synthesis.
CC Catalyzes the biosynthesis of deoxyribonucleotides from the
CC corresponding ribonucleotides.
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 -!- ACTIVITY REGULATION: Under complex allosteric control mediated by
CC deoxynucleoside triphosphates and ATP binding. The type of nucleotide
CC bound at the specificity site determines substrate preference. It seems
CC probable that ATP makes the enzyme reduce CDP and UDP, dGTP favors ADP
CC reduction and dTTP favors GDP reduction (By similarity). {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 large
CC chain family. {ECO:0000305}.
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DR EMBL; X67119; CAA47558.1; -; Genomic_DNA.
DR EMBL; X69198; CAA48999.1; -; Genomic_DNA.
DR PIR; B36843; B36843.
DR RefSeq; NP_042102.1; NC_001611.1.
DR SMR; P0DSV1; -.
DR GeneID; 1486459; -.
DR KEGG; vg:1486459; -.
DR UniPathway; UPA00326; -.
DR Proteomes; UP000002060; Genome.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0004748; F:ribonucleoside-diphosphate reductase activity, thioredoxin disulfide as acceptor; IEA:UniProtKB-EC.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-UniPathway.
DR InterPro; IPR005144; ATP-cone_dom.
DR InterPro; IPR013346; NrdE_NrdA.
DR InterPro; IPR000788; RNR_lg_C.
DR InterPro; IPR013509; RNR_lsu_N.
DR InterPro; IPR008926; RNR_R1-su_N.
DR InterPro; IPR039718; Rrm1.
DR PANTHER; PTHR11573; PTHR11573; 1.
DR Pfam; PF03477; ATP-cone; 1.
DR Pfam; PF02867; Ribonuc_red_lgC; 1.
DR Pfam; PF00317; Ribonuc_red_lgN; 1.
DR PRINTS; PR01183; RIBORDTASEM1.
DR SUPFAM; SSF48168; SSF48168; 1.
DR TIGRFAMs; TIGR02506; NrdE_NrdA; 1.
DR PROSITE; PS51161; ATP_CONE; 1.
DR PROSITE; PS00089; RIBORED_LARGE; 1.
PE 2: Evidence at transcript level;
KW Allosteric enzyme; ATP-binding; Deoxyribonucleotide synthesis;
KW Disulfide bond; Early protein; Nucleotide-binding; Oxidoreductase;
KW Reference proteome.
FT CHAIN 1..771
FT /note="Ribonucleoside-diphosphate reductase large subunit"
FT /id="PRO_0000187233"
FT DOMAIN 1..92
FT /note="ATP-cone"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00492"
FT ACT_SITE 427
FT /note="Proton acceptor"
FT /evidence="ECO:0000250"
FT ACT_SITE 429
FT /note="Cysteine radical intermediate"
FT /evidence="ECO:0000250"
FT ACT_SITE 431
FT /note="Proton acceptor"
FT /evidence="ECO:0000250"
FT BINDING 202
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 217..218
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 247
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 427..431
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 602..606
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT SITE 218
FT /note="Important for hydrogen atom transfer"
FT /evidence="ECO:0000250"
FT SITE 226
FT /note="Allosteric effector binding"
FT /evidence="ECO:0000250"
FT SITE 256
FT /note="Allosteric effector binding"
FT /evidence="ECO:0000250"
FT SITE 444
FT /note="Important for hydrogen atom transfer"
FT /evidence="ECO:0000250"
FT SITE 735
FT /note="Important for electron transfer"
FT /evidence="ECO:0000250"
FT SITE 736
FT /note="Important for electron transfer"
FT /evidence="ECO:0000250"
FT SITE 766
FT /note="Interacts with thioredoxin/glutaredoxin"
FT /evidence="ECO:0000250"
FT SITE 769
FT /note="Interacts with thioredoxin/glutaredoxin"
FT /evidence="ECO:0000250"
FT DISULFID 218..444
FT /note="Redox-active"
FT /evidence="ECO:0000250"
SQ SEQUENCE 771 AA; 87761 MW; E628AAA9AD95A8CD CRC64;
MFVIKRNGYK ENVMFDKITS RIRKLCYGLN TDHIDPIKIA MKVIQGIYNG VTTVELDTLT
AEIAATCTTQ HPDYAILAAR IAVSNLHKET KKLFSEVMKD LFNYVNPKNG KHSPIISSIT
MDVVNKYKDK LNSVIIYERD FSYNYFGFKT LEKSYLLKIN NKIVERPQHM LMRVAVGIHQ
WDIDSAIETY NLLSEKWFTH ASPTLFNAGT SRHQMSSCFL LNMMDDSIEG IYDTLKRCAL
ISKMAGGIGL SISNIRASGS YISGTNGASN GIIPMLRVYN NTARYIDQGG NKRPGVMTIY
LEPWHSDIMA FLDLKKNTGN EEHRTRDLFI ALWIPDLFMK RVKDDGEWSL MCPDECPGLD
NVWGDEFERL YTLYEREKRY KSIIKARVVW KAIIESQIET GTPFILYKDA CNKKSNQQNL
GTIKCSNLCT EIIQYADANE VAVCNLASIA LNMFVIDGQF DFLKLKDVVK VIVRNLNKII
DINYYPIPEA EISNKRHRPI GIGVQGLADA FILLNYPFDS LEAQDLNKKI FETIYYGALE
ASCELAEKEG PYDTYVGSYA SNGILQYDLW NVVPSDLWNW EPLKDKIRTY GLRNSLLVAP
MPTASTAQIL GNNESVEPYT SNIYTRRVLS GEFQVVNPHL LRVLTERKLW NDEIKNRIMV
DGGSIQNTNL PEDIKRVYKT IWEIPQKTII KMAADRGAFI DQSQSMNIHI ADPSYSKLTS
MHFYGWSLGL KTGMYYLRTK PASAPIQFTL DKDKIKPLVV CDSEICTSCS G
