ID   DCDB_METMJ              Reviewed;         187 AA.
AC   A3CTK0;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   27-MAR-2024, entry version 94.
DE   RecName: Full=dCTP deaminase, dUMP-forming {ECO:0000255|HAMAP-Rule:MF_00146};
DE            EC=3.5.4.30 {ECO:0000255|HAMAP-Rule:MF_00146};
DE   AltName: Full=Bifunctional dCTP deaminase:dUTPase {ECO:0000255|HAMAP-Rule:MF_00146};
DE   AltName: Full=DCD-DUT {ECO:0000255|HAMAP-Rule:MF_00146};
GN   Name=dcd {ECO:0000255|HAMAP-Rule:MF_00146};
GN   OrderedLocusNames=Memar_0767;
OS   Methanoculleus marisnigri (strain ATCC 35101 / DSM 1498 / JR1).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanomicrobiales; Methanomicrobiaceae; Methanoculleus.
OX   NCBI_TaxID=368407;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35101 / DSM 1498 / JR1;
RX   PubMed=21304656; DOI=10.4056/sigs.32535;
RA   Anderson I.J., Sieprawska-Lupa M., Lapidus A., Nolan M., Copeland A.,
RA   Glavina Del Rio T., Tice H., Dalin E., Barry K., Saunders E., Han C.,
RA   Brettin T., Detter J.C., Bruce D., Mikhailova N., Pitluck S., Hauser L.,
RA   Land M., Lucas S., Richardson P., Whitman W.B., Kyrpides N.C.;
RT   "Complete genome sequence of Methanoculleus marisnigri Romesser et al. 1981
RT   type strain JR1.";
RL   Stand. Genomic Sci. 1:189-196(2009).
CC   -!- FUNCTION: Bifunctional enzyme that catalyzes both the deamination of
CC       dCTP to dUTP and the hydrolysis of dUTP to dUMP without releasing the
CC       toxic dUTP intermediate. {ECO:0000255|HAMAP-Rule:MF_00146}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=dCTP + 2 H2O = diphosphate + dUMP + NH4(+);
CC         Xref=Rhea:RHEA:19205, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:61481, ChEBI:CHEBI:246422;
CC         EC=3.5.4.30; Evidence={ECO:0000255|HAMAP-Rule:MF_00146};
CC   -!- PATHWAY: Pyrimidine metabolism; dUMP biosynthesis; dUMP from dCTP: step
CC       1/1. {ECO:0000255|HAMAP-Rule:MF_00146}.
CC   -!- SUBUNIT: Homotrimer. {ECO:0000255|HAMAP-Rule:MF_00146}.
CC   -!- SIMILARITY: Belongs to the dCTP deaminase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00146}.
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DR   EMBL; CP000562; ABN56700.1; -; Genomic_DNA.
DR   RefSeq; WP_011843611.1; NC_009051.1.
DR   AlphaFoldDB; A3CTK0; -.
DR   SMR; A3CTK0; -.
DR   STRING; 368407.Memar_0767; -.
DR   GeneID; 76731337; -.
DR   KEGG; mem:Memar_0767; -.
DR   eggNOG; arCOG04048; Archaea.
DR   HOGENOM; CLU_087476_2_0_2; -.
DR   OrthoDB; 33242at2157; -.
DR   UniPathway; UPA00610; UER00667.
DR   Proteomes; UP000002146; Chromosome.
DR   GO; GO:0033973; F:dCTP deaminase (dUMP-forming) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008829; F:dCTP deaminase activity; IEA:InterPro.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR   GO; GO:0006226; P:dUMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006229; P:dUTP biosynthetic process; IEA:InterPro.
DR   CDD; cd07557; trimeric_dUTPase; 1.
DR   Gene3D; 2.70.40.10; -; 1.
DR   HAMAP; MF_00146; dCTP_deaminase; 1.
DR   InterPro; IPR010550; dCTP_deam_bac.
DR   InterPro; IPR011962; dCTP_deaminase.
DR   InterPro; IPR036157; dUTPase-like_sf.
DR   InterPro; IPR033704; dUTPase_trimeric.
DR   NCBIfam; TIGR02274; dCTP_deam; 1.
DR   PANTHER; PTHR42680; DCTP DEAMINASE; 1.
DR   PANTHER; PTHR42680:SF3; DCTP DEAMINASE; 1.
DR   Pfam; PF06559; DCD; 1.
DR   SUPFAM; SSF51283; dUTPase-like; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Nucleotide metabolism; Nucleotide-binding.
FT   CHAIN           1..187
FT                   /note="dCTP deaminase, dUMP-forming"
FT                   /id="PRO_1000117984"
FT   ACT_SITE        127
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         99..104
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         117
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         125..127
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         146
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         159
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         166
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   BINDING         170
FT                   /ligand="dCTP"
FT                   /ligand_id="ChEBI:CHEBI:61481"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
FT   SITE            114..115
FT                   /note="Important for bifunctional activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00146"
SQ   SEQUENCE   187 AA;  21223 MW;  76DE6F478589AED2 CRC64;
     MILVDWQIED RIRRGHIRVD PFEPGLIQPN SLDIRLGSHF VWYVPGETVI DPYDSETVCR
     DTEEMVADSI VLAPGRFLLA ETLEAIELPD DIVASIEGKS SIARLGVELH QTGGWIDAGF
     RGTITLEMCN VNSRPVKVYA GMPIGQLVFY RTDRAARPYN MKQDAKYMDQ QQATLSRYHE
     NARRAEE
//