CDD_ALKHC
ID CDD_ALKHC Reviewed; 132 AA.
AC Q9KD53;
DT 13-AUG-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 117.
DE RecName: Full=Cytidine deaminase;
DE Short=CDA;
DE EC=3.5.4.5;
DE AltName: Full=Cytidine aminohydrolase;
GN Name=cdd; OrderedLocusNames=BH1366;
OS Alkalihalobacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344
OS / JCM 9153 / C-125) (Bacillus halodurans).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalobacillus.
OX NCBI_TaxID=272558;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125;
RX PubMed=11058132; DOI=10.1093/nar/28.21.4317;
RA Takami H., Nakasone K., Takaki Y., Maeno G., Sasaki R., Masui N., Fuji F.,
RA Hirama C., Nakamura Y., Ogasawara N., Kuhara S., Horikoshi K.;
RT "Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans
RT and genomic sequence comparison with Bacillus subtilis.";
RL Nucleic Acids Res. 28:4317-4331(2000).
CC -!- FUNCTION: This enzyme scavenges exogenous and endogenous cytidine and
CC 2'-deoxycytidine for UMP synthesis. {ECO:0000250}.
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 -!- 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 -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000250};
CC -!- SIMILARITY: Belongs to the cytidine and deoxycytidylate deaminase
CC family. {ECO:0000305}.
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DR EMBL; BA000004; BAB05085.1; -; Genomic_DNA.
DR PIR; F83820; F83820.
DR RefSeq; WP_010897531.1; NC_002570.2.
DR AlphaFoldDB; Q9KD53; -.
DR SMR; Q9KD53; -.
DR STRING; 272558.10173982; -.
DR EnsemblBacteria; BAB05085; BAB05085; BAB05085.
DR KEGG; bha:BH1366; -.
DR eggNOG; COG0295; Bacteria.
DR HOGENOM; CLU_097262_0_1_9; -.
DR OMA; CGACRQS; -.
DR OrthoDB; 1895660at2; -.
DR Proteomes; UP000001258; Chromosome.
DR GO; GO:0004126; F:cytidine deaminase activity; IEA:UniProtKB-EC.
DR GO; GO:0047844; F:deoxycytidine deaminase activity; IEA:RHEA.
DR GO; GO:0008270; F:zinc ion binding; IEA:InterPro.
DR InterPro; IPR016192; APOBEC/CMP_deaminase_Zn-bd.
DR InterPro; IPR002125; CMP_dCMP_dom.
DR InterPro; IPR006262; Cyt_deam_tetra.
DR InterPro; IPR016193; Cytidine_deaminase-like.
DR Pfam; PF00383; dCMP_cyt_deam_1; 1.
DR SUPFAM; SSF53927; SSF53927; 1.
DR TIGRFAMs; TIGR01354; cyt_deam_tetra; 1.
DR PROSITE; PS00903; CYT_DCMP_DEAMINASES_1; 1.
DR PROSITE; PS51747; CYT_DCMP_DEAMINASES_2; 1.
PE 3: Inferred from homology;
KW Hydrolase; Metal-binding; Reference proteome; Zinc.
FT CHAIN 1..132
FT /note="Cytidine deaminase"
FT /id="PRO_0000171676"
FT DOMAIN 1..128
FT /note="CMP/dCMP-type deaminase"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01083"
FT ACT_SITE 55
FT /note="Proton donor"
FT /evidence="ECO:0000250"
FT BINDING 42..44
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 53
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250"
FT BINDING 86
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250"
FT BINDING 89
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250"
SQ SEQUENCE 132 AA; 14301 MW; 3A9800D567088D30 CRC64;
MDRQMLIKEA IQAREGAYVP YSRFQVGAAL LMKDGSVIRG ANIENASYGL TNCAERTALF
KAYSEGRRDV VAIAVVADTK RPVPPCGACR QVMAELCPAD TKVYLGNLQG DIQEITVSEL
LPGAFTAEDM ND
