ID   B7URM6_ECO27            Unreviewed;       466 AA.
AC   B7URM6;
DT   10-FEB-2009, integrated into UniProtKB/TrEMBL.
DT   10-FEB-2009, sequence version 1.
DT   27-MAR-2024, entry version 82.
DE   RecName: Full=Glutamate decarboxylase {ECO:0000256|ARBA:ARBA00012421, ECO:0000256|RuleBase:RU361171};
DE            EC=4.1.1.15 {ECO:0000256|ARBA:ARBA00012421, ECO:0000256|RuleBase:RU361171};
GN   Name=gadB {ECO:0000313|EMBL:CAS09168.1};
GN   OrderedLocusNames=E2348C_1620 {ECO:0000313|EMBL:CAS09168.1};
OS   Escherichia coli O127:H6 (strain E2348/69 / EPEC).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=574521 {ECO:0000313|EMBL:CAS09168.1, ECO:0000313|Proteomes:UP000008205};
RN   [1] {ECO:0000313|EMBL:CAS09168.1, ECO:0000313|Proteomes:UP000008205}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=E2348/69 / EPEC {ECO:0000313|Proteomes:UP000008205};
RX   PubMed=18952797; DOI=10.1128/JB.01238-08;
RA   Iguchi A., Thomson N.R., Ogura Y., Saunders D., Ooka T., Henderson I.R.,
RA   Harris D., Asadulghani M., Kurokawa K., Dean P., Kenny B., Quail M.A.,
RA   Thurston S., Dougan G., Hayashi T., Parkhill J., Frankel G.;
RT   "Complete genome sequence and comparative genome analysis of
RT   enteropathogenic Escherichia coli O127:H6 strain E2348/69.";
RL   J. Bacteriol. 191:347-354(2009).
CC   -!- FUNCTION: Converts glutamate to gamma-aminobutyrate (GABA), consuming
CC       one intracellular proton in the reaction. The gad system helps to
CC       maintain a near-neutral intracellular pH when cells are exposed to
CC       extremely acidic conditions. The ability to survive transit through the
CC       acidic conditions of the stomach is essential for successful
CC       colonization of the mammalian host by commensal and pathogenic
CC       bacteria. {ECO:0000256|ARBA:ARBA00024984}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + L-glutamate = 4-aminobutanoate + CO2;
CC         Xref=Rhea:RHEA:17785, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:29985, ChEBI:CHEBI:59888; EC=4.1.1.15;
CC         Evidence={ECO:0000256|ARBA:ARBA00000018,
CC         ECO:0000256|RuleBase:RU361171};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000256|ARBA:ARBA00001933,
CC         ECO:0000256|PIRSR:PIRSR602129-50, ECO:0000256|RuleBase:RU000382};
CC   -!- SIMILARITY: Belongs to the group II decarboxylase family.
CC       {ECO:0000256|RuleBase:RU000382}.
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DR   EMBL; FM180568; CAS09168.1; -; Genomic_DNA.
DR   RefSeq; WP_000358849.1; NC_011601.1.
DR   AlphaFoldDB; B7URM6; -.
DR   KEGG; ecg:E2348C_1620; -.
DR   HOGENOM; CLU_019582_0_0_6; -.
DR   Proteomes; UP000008205; Chromosome.
DR   GO; GO:0004351; F:glutamate decarboxylase activity; IEA:UniProtKB-EC.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:InterPro.
DR   GO; GO:0006536; P:glutamate metabolic process; IEA:InterPro.
DR   CDD; cd06450; DOPA_deC_like; 1.
DR   Gene3D; 3.90.1150.160; -; 1.
DR   Gene3D; 4.10.280.50; -; 1.
DR   Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 1.
DR   InterPro; IPR010107; Glutamate_decarboxylase.
DR   InterPro; IPR002129; PyrdxlP-dep_de-COase.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR021115; Pyridoxal-P_BS.
DR   NCBIfam; TIGR01788; Glu-decarb-GAD; 1.
DR   PANTHER; PTHR43321; GLUTAMATE DECARBOXYLASE; 1.
DR   PANTHER; PTHR43321:SF3; GLUTAMATE DECARBOXYLASE; 1.
DR   Pfam; PF00282; Pyridoxal_deC; 1.
DR   SUPFAM; SSF53383; PLP-dependent transferases; 1.
DR   PROSITE; PS00392; DDC_GAD_HDC_YDC; 1.
PE   3: Inferred from homology;
KW   Decarboxylase {ECO:0000256|RuleBase:RU361171};
KW   Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|RuleBase:RU000382};
KW   Pyridoxal phosphate {ECO:0000256|PIRSR:PIRSR602129-50,
KW   ECO:0000256|RuleBase:RU000382};
KW   Reference proteome {ECO:0000313|Proteomes:UP000008205}.
FT   MOD_RES         276
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR602129-50"
SQ   SEQUENCE   466 AA;  52654 MW;  CF15593BA850CFC3 CRC64;
     MDKKQVTDLR SELLDSRFGA KSISTIAESK RFPLHEMRDD VAFQIINDEL YLDGNARQNL
     ATFCQTWDDD NVHKLMDLSI NKNWIDKEEY PQSAAIDLRC VNMVADLWHA PAPKNGQAVG
     TNTIGSSEAC MLGGMAMKWR WRKRMEAAGK PTDKPNLVCG PVQICWHKFA RYWDVELREI
     PMRPGQLFMD PKRMIEACDE NTIGVVPTFG VTYTGNYEFP QPLHDALDKF QADTGIDIDM
     HIDAASGGFL APFVAPDIVW DFRLPRVKSI SASGHKFGLA PLGCGWVIWR DEEALPQELV
     FNVDYLGGQI GTFAINFSRP AGQVIAQYYE FLRLGREGYT KVQNASYQVA AYLADEIAKL
     GPYEFICTGR PDEGIPAVCF KLKDGEDPGY TLYDLSERLR LRGWQVPAFT LGGEATDIVV
     MRIMCRRGFE MDFAELLLED YKASLKYLSD HPKLQGIAQQ NSFKHT
//