ID   CDD_ENT38               Reviewed;         294 AA.
AC   A4WCI1;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   03-AUG-2022, entry version 87.
DE   RecName: Full=Cytidine deaminase {ECO:0000255|HAMAP-Rule:MF_01558};
DE            EC=3.5.4.5 {ECO:0000255|HAMAP-Rule:MF_01558};
DE   AltName: Full=Cytidine aminohydrolase {ECO:0000255|HAMAP-Rule:MF_01558};
DE            Short=CDA {ECO:0000255|HAMAP-Rule:MF_01558};
GN   Name=cdd {ECO:0000255|HAMAP-Rule:MF_01558}; OrderedLocusNames=Ent638_2746;
OS   Enterobacter sp. (strain 638).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Enterobacter.
OX   NCBI_TaxID=399742;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=638;
RX   PubMed=20485560; DOI=10.1371/journal.pgen.1000943;
RA   Taghavi S., van der Lelie D., Hoffman A., Zhang Y.B., Walla M.D.,
RA   Vangronsveld J., Newman L., Monchy S.;
RT   "Genome sequence of the plant growth promoting endophytic bacterium
RT   Enterobacter sp. 638.";
RL   PLoS Genet. 6:E1000943-E1000943(2010).
CC   -!- FUNCTION: This enzyme scavenges exogenous and endogenous cytidine and
CC       2'-deoxycytidine for UMP synthesis. {ECO:0000255|HAMAP-Rule:MF_01558}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=cytidine + H(+) + H2O = NH4(+) + uridine;
CC         Xref=Rhea:RHEA:16069, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16704, ChEBI:CHEBI:17562, ChEBI:CHEBI:28938; EC=3.5.4.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01558};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2'-deoxycytidine + H(+) + H2O = 2'-deoxyuridine + NH4(+);
CC         Xref=Rhea:RHEA:13433, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15698, ChEBI:CHEBI:16450, ChEBI:CHEBI:28938; EC=3.5.4.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01558};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01558};
CC       Note=Binds 1 zinc ion. {ECO:0000255|HAMAP-Rule:MF_01558};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01558}.
CC   -!- SIMILARITY: Belongs to the cytidine and deoxycytidylate deaminase
CC       family. {ECO:0000255|HAMAP-Rule:MF_01558}.
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DR   EMBL; CP000653; ABP61411.1; -; Genomic_DNA.
DR   RefSeq; WP_015959744.1; NC_009436.1.
DR   AlphaFoldDB; A4WCI1; -.
DR   SMR; A4WCI1; -.
DR   STRING; 399742.Ent638_2746; -.
DR   EnsemblBacteria; ABP61411; ABP61411; Ent638_2746.
DR   KEGG; ent:Ent638_2746; -.
DR   eggNOG; COG0295; Bacteria.
DR   HOGENOM; CLU_052424_0_0_6; -.
DR   OMA; NYSPCGH; -.
DR   OrthoDB; 959039at2; -.
DR   Proteomes; UP000000230; Chromosome.
DR   GO; GO:0004126; F:cytidine deaminase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0047844; F:deoxycytidine deaminase activity; IEA:RHEA.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01558; Cyt_deam; 1.
DR   InterPro; IPR016192; APOBEC/CMP_deaminase_Zn-bd.
DR   InterPro; IPR002125; CMP_dCMP_dom.
DR   InterPro; IPR013171; Cyd/dCyd_deaminase_Zn-bd.
DR   InterPro; IPR006263; Cyt_deam_dimer.
DR   InterPro; IPR016193; Cytidine_deaminase-like.
DR   InterPro; IPR020797; Cytidine_deaminase_bacteria.
DR   Pfam; PF00383; dCMP_cyt_deam_1; 1.
DR   Pfam; PF08211; dCMP_cyt_deam_2; 1.
DR   SUPFAM; SSF53927; SSF53927; 2.
DR   TIGRFAMs; TIGR01355; cyt_deam_dimer; 1.
DR   PROSITE; PS00903; CYT_DCMP_DEAMINASES_1; 1.
DR   PROSITE; PS51747; CYT_DCMP_DEAMINASES_2; 2.
PE   3: Inferred from homology;
KW   Hydrolase; Metal-binding; Zinc.
FT   CHAIN           1..294
FT                   /note="Cytidine deaminase"
FT                   /id="PRO_1000068953"
FT   DOMAIN          48..168
FT                   /note="CMP/dCMP-type deaminase 1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01083"
FT   DOMAIN          186..294
FT                   /note="CMP/dCMP-type deaminase 2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01083"
FT   ACT_SITE        104
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01558"
FT   BINDING         89..91
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01558"
FT   BINDING         102
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01558"
FT   BINDING         129
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01558"
FT   BINDING         132
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01558"
SQ   SEQUENCE   294 AA;  31572 MW;  B2FE06DF3F7AB726 CRC64;
     MHPRFQSAFA QLAENLQSAL APVLADEHFP ALLTAEQVTM LKQATGLDED ALAFALLPLA
     AACARADLSH FNVGAIARGV SGTWYFGGNM EFLGATMQQT VHAEQSAISH AWLRGEHALN
     AITVNYTPCG HCRQFMNELN SGLELRINLP GREPHTLGDY LPDAFGPKDL DIKTLLMDEQ
     NHGYALTGDE LTQSAIAAAN KSHAPYSQSP SGVALECRDG RIFSGSYAEN AAFNPTLPPL
     QGALNLLSLN GYDYPDIQRA ILAEKADAPL IQWDATAATL KALGCSNIDR TLLA