ID   PPTA_ECODH              Reviewed;          77 AA.
AC   B1XDG9;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAY-2008, sequence version 1.
DT   03-AUG-2022, entry version 68.
DE   RecName: Full=Tautomerase PptA {ECO:0000255|HAMAP-Rule:MF_00718};
DE            EC=5.3.2.- {ECO:0000255|HAMAP-Rule:MF_00718};
GN   Name=pptA {ECO:0000255|HAMAP-Rule:MF_00718};
GN   OrderedLocusNames=ECDH10B_1592;
OS   Escherichia coli (strain K12 / DH10B).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=316385;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / DH10B;
RX   PubMed=18245285; DOI=10.1128/jb.01695-07;
RA   Durfee T., Nelson R., Baldwin S., Plunkett G. III, Burland V., Mau B.,
RA   Petrosino J.F., Qin X., Muzny D.M., Ayele M., Gibbs R.A., Csorgo B.,
RA   Posfai G., Weinstock G.M., Blattner F.R.;
RT   "The complete genome sequence of Escherichia coli DH10B: insights into the
RT   biology of a laboratory workhorse.";
RL   J. Bacteriol. 190:2597-2606(2008).
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00718}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00718}.
CC   -!- SIMILARITY: Belongs to the 4-oxalocrotonate tautomerase family. PptA
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00718}.
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DR   EMBL; CP000948; ACB02674.1; -; Genomic_DNA.
DR   RefSeq; WP_001120143.1; NC_010473.1.
DR   AlphaFoldDB; B1XDG9; -.
DR   SMR; B1XDG9; -.
DR   KEGG; ecd:ECDH10B_1592; -.
DR   HOGENOM; CLU_183611_0_1_6; -.
DR   OMA; IKCFPRD; -.
DR   BioCyc; ECOL316385:ECDH10B_RS08160-MON; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0016862; F:intramolecular oxidoreductase activity, interconverting keto- and enol-groups; IEA:UniProtKB-UniRule.
DR   GO; GO:0006725; P:cellular aromatic compound metabolic process; IEA:InterPro.
DR   Gene3D; 3.30.429.10; -; 1.
DR   HAMAP; MF_00718; Tautomerase_PptA; 1.
DR   InterPro; IPR004370; 4-oxalocrotonate_tautomerase.
DR   InterPro; IPR014347; Tautomerase/MIF_sf.
DR   InterPro; IPR017284; Tautomerase_PptA.
DR   Pfam; PF01361; Tautomerase; 1.
DR   PIRSF; PIRSF037799; Tautomer_YdcE_prd; 1.
DR   SUPFAM; SSF55331; SSF55331; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Isomerase.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00718"
FT   CHAIN           2..77
FT                   /note="Tautomerase PptA"
FT                   /id="PRO_0000348341"
FT   ACT_SITE        2
FT                   /note="Proton acceptor; via imino nitrogen"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00718"
SQ   SEQUENCE   77 AA;  8673 MW;  D32FF4023FE556CA CRC64;
     MPHIDIKCFP RELDEQQKAA LAADITDVII RHLNSKDSSI SIALQQIQPE SWQAIWDAEI
     APQMEALIKK PGYSMNA