ID   AC4CH_YERPN             Reviewed;         102 AA.
AC   Q1CH57; C4GUP8;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=N(4)-acetylcytidine amidohydrolase {ECO:0000255|HAMAP-Rule:MF_00684};
DE            Short=ac4C amidohydrolase {ECO:0000255|HAMAP-Rule:MF_00684};
DE            EC=3.5.1.135 {ECO:0000255|HAMAP-Rule:MF_00684};
GN   OrderedLocusNames=YPN_2345; ORFNames=YP516_2643;
OS   Yersinia pestis bv. Antiqua (strain Nepal516).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Yersinia.
OX   NCBI_TaxID=377628;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Nepal516;
RX   PubMed=16740952; DOI=10.1128/jb.00124-06;
RA   Chain P.S.G., Hu P., Malfatti S.A., Radnedge L., Larimer F., Vergez L.M.,
RA   Worsham P., Chu M.C., Andersen G.L.;
RT   "Complete genome sequence of Yersinia pestis strains Antiqua and Nepal516:
RT   evidence of gene reduction in an emerging pathogen.";
RL   J. Bacteriol. 188:4453-4463(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Nepal516;
RA   Plunkett G. III, Anderson B.D., Baumler D.J., Burland V., Cabot E.L.,
RA   Glasner J.D., Mau B., Neeno-Eckwall E., Perna N.T., Munk A.C., Tapia R.,
RA   Green L.D., Rogers Y.C., Detter J.C., Bruce D.C., Brettin T.S.;
RT   "Yersinia pestis Nepal516A whole genome shotgun sequencing project.";
RL   Submitted (APR-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the hydrolysis of N(4)-acetylcytidine (ac4C).
CC       {ECO:0000255|HAMAP-Rule:MF_00684}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + N(4)-acetylcytidine = acetate + cytidine + H(+);
CC         Xref=Rhea:RHEA:62932, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:17562, ChEBI:CHEBI:30089, ChEBI:CHEBI:70989;
CC         EC=3.5.1.135; Evidence={ECO:0000255|HAMAP-Rule:MF_00684};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + N(4)-acetyl-2'-deoxycytidine = 2'-deoxycytidine +
CC         acetate + H(+); Xref=Rhea:RHEA:62936, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:15698, ChEBI:CHEBI:30089,
CC         ChEBI:CHEBI:146133; EC=3.5.1.135; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00684};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + N(4)-acetylcytosine = acetate + cytosine + H(+);
CC         Xref=Rhea:RHEA:62940, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16040, ChEBI:CHEBI:30089, ChEBI:CHEBI:146134;
CC         EC=3.5.1.135; Evidence={ECO:0000255|HAMAP-Rule:MF_00684};
CC   -!- SIMILARITY: Belongs to the N(4)-acetylcytidine amidohydrolase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00684}.
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DR   EMBL; CP000305; ABG18673.1; -; Genomic_DNA.
DR   EMBL; ACNQ01000013; EEO76435.1; -; Genomic_DNA.
DR   RefSeq; WP_002211086.1; NZ_ACNQ01000013.1.
DR   AlphaFoldDB; Q1CH57; -.
DR   SMR; Q1CH57; -.
DR   EnsemblBacteria; ABG18673; ABG18673; YPN_2345.
DR   GeneID; 66841912; -.
DR   KEGG; ypn:YPN_2345; -.
DR   HOGENOM; CLU_152586_0_0_6; -.
DR   OMA; HARQENM; -.
DR   Proteomes; UP000008936; Chromosome.
DR   GO; GO:0016813; F:hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amidines; IEA:UniProtKB-UniRule.
DR   GO; GO:0106251; F:N4-acetylcytidine amidohydrolase activity; IEA:RHEA.
DR   HAMAP; MF_00684; ac4C_amidohydr; 1.
DR   InterPro; IPR008314; AC4CH.
DR   InterPro; IPR007374; ASCH_domain.
DR   InterPro; IPR015947; PUA-like_sf.
DR   PANTHER; PTHR38088; PTHR38088; 1.
DR   Pfam; PF04266; ASCH; 1.
DR   PIRSF; PIRSF029143; UCP029143; 1.
DR   SMART; SM01022; ASCH; 1.
DR   SUPFAM; SSF88697; SSF88697; 1.
PE   3: Inferred from homology;
KW   Hydrolase.
FT   CHAIN           1..102
FT                   /note="N(4)-acetylcytidine amidohydrolase"
FT                   /id="PRO_1000044966"
FT   DOMAIN          6..92
FT                   /note="ASCH"
FT                   /evidence="ECO:0000255"
FT   ACT_SITE        20
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00684"
FT   ACT_SITE        23
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00684"
FT   ACT_SITE        73
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00684"
SQ   SEQUENCE   102 AA;  11852 MW;  C1E5D163C7508D0B CRC64;
     MNREITFFGR FEADILADRK TITIRDSSES DFRSGEVLRV CRNEDGVFFC HIKVKSVTPV
     TLDGLSERHA EQENMSLDEL KKVIKAIYPG LDRFYVIEFT RC