ID   APHA_CITRI              Reviewed;         237 AA.
AC   D2TRT2;
DT   25-JAN-2012, integrated into UniProtKB/Swiss-Prot.
DT   02-MAR-2010, sequence version 1.
DT   03-AUG-2022, entry version 61.
DE   RecName: Full=Class B acid phosphatase {ECO:0000250|UniProtKB:P0AE22, ECO:0000312|EMBL:CBG90344.1};
DE            Short=CBAP {ECO:0000250|UniProtKB:P0AE22};
DE            EC=3.1.3.2 {ECO:0000250|UniProtKB:P0AE22, ECO:0000312|EMBL:CBG90344.1};
DE   Flags: Precursor;
GN   Name=aphA {ECO:0000250|UniProtKB:P0AE22, ECO:0000312|EMBL:CBG90344.1};
GN   OrderedLocusNames=ROD_36361;
OS   Citrobacter rodentium (strain ICC168) (Citrobacter freundii biotype 4280).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Citrobacter.
OX   NCBI_TaxID=637910;
RN   [1] {ECO:0000312|EMBL:CBG90344.1}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ICC168 {ECO:0000269|PubMed:19897651};
RX   PubMed=19897651; DOI=10.1128/jb.01144-09;
RA   Petty N.K., Bulgin R., Crepin V.F., Cerdeno-Tarraga A.M., Schroeder G.N.,
RA   Quail M.A., Lennard N., Corton C., Barron A., Clark L., Toribio A.L.,
RA   Parkhill J., Dougan G., Frankel G., Thomson N.R.;
RT   "The Citrobacter rodentium genome sequence reveals convergent evolution
RT   with human pathogenic Escherichia coli.";
RL   J. Bacteriol. 192:525-538(2010).
CC   -!- FUNCTION: Dephosphorylates several organic phosphate monoesters. Also
CC       has a phosphotransferase activity catalyzing the transfer of low-energy
CC       phosphate groups from organic phosphate monoesters to free hydroxyl
CC       groups of various organic compounds (By similarity).
CC       {ECO:0000250|UniProtKB:P0AE22}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a phosphate monoester + H2O = an alcohol + phosphate;
CC         Xref=Rhea:RHEA:15017, ChEBI:CHEBI:15377, ChEBI:CHEBI:30879,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:67140; EC=3.1.3.2;
CC         Evidence={ECO:0000250|UniProtKB:P0AE22};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000250|UniProtKB:P0AE22};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000250|UniProtKB:P0AE22};
CC   -!- SUBUNIT: Homotetramer. {ECO:0000250|UniProtKB:P0AE22}.
CC   -!- SUBCELLULAR LOCATION: Periplasm {ECO:0000250|UniProtKB:P0AE22}.
CC   -!- SIMILARITY: Belongs to the class B bacterial acid phosphatase family.
CC       {ECO:0000250|UniProtKB:P0AE22}.
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DR   EMBL; FN543502; CBG90344.1; -; Genomic_DNA.
DR   RefSeq; WP_012907668.1; NC_013716.1.
DR   AlphaFoldDB; D2TRT2; -.
DR   SMR; D2TRT2; -.
DR   STRING; 637910.ROD_36361; -.
DR   KEGG; cro:ROD_36361; -.
DR   eggNOG; COG3700; Bacteria.
DR   HOGENOM; CLU_081496_0_0_6; -.
DR   OMA; PEFWEKM; -.
DR   OrthoDB; 1258380at2; -.
DR   Proteomes; UP000001889; Chromosome.
DR   GO; GO:0030288; C:outer membrane-bounded periplasmic space; IEA:InterPro.
DR   GO; GO:0003993; F:acid phosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   CDD; cd07499; HAD_CBAP; 1.
DR   Gene3D; 3.40.50.1000; -; 1.
DR   InterPro; IPR005519; Acid_phosphat_B-like.
DR   InterPro; IPR036412; HAD-like_sf.
DR   InterPro; IPR010025; HAD-SF_ppase_IIIB_AphA.
DR   InterPro; IPR023214; HAD_sf.
DR   Pfam; PF03767; Acid_phosphat_B; 1.
DR   PIRSF; PIRSF017818; Acid_Ptase_B; 1.
DR   SFLD; SFLDG01127; C1.3:_Acid_Phosphatase_Like; 1.
DR   SUPFAM; SSF56784; SSF56784; 1.
DR   TIGRFAMs; TIGR01672; AphA; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Magnesium; Metal-binding; Periplasm; Reference proteome; Signal.
FT   SIGNAL          1..25
FT                   /evidence="ECO:0000255, ECO:0000312|EMBL:CBG90344.1"
FT   CHAIN           26..237
FT                   /note="Class B acid phosphatase"
FT                   /evidence="ECO:0000255"
FT                   /id="PRO_5000566034"
FT   ACT_SITE        69
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   ACT_SITE        71
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   BINDING         69
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   BINDING         71
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   BINDING         137..138
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   BINDING         177
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
FT   BINDING         192
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P0AE22"
SQ   SEQUENCE   237 AA;  26157 MW;  3BF9EA0904C88479 CRC64;
     MRKVSLALSA ACLLFTLNYT ASALASSPSP LNPGTNVAKL AEQAPVHWVS VAQIEKSLTG
     RPPMAVGFDI DDTVLFSSPG FWRGKKMYSP DSEEYLKNPA FWEKMNNGWD EFSIPKEVAR
     QLIALHLRRG DSIFFVTGRS QTSNERVSKT LADDFLIPAT VMNPVIFAGD KPGQNSKIQW
     LQAKNIRIFY GDSDNDIAAA RELGIRGIRI LRASNSTYKP LPQAGAFGEE VIVNSEY