DCEA_ECO57
ID DCEA_ECO57 Reviewed; 466 AA.
AC P58228;
DT 14-AUG-2001, integrated into UniProtKB/Swiss-Prot.
DT 14-AUG-2001, sequence version 1.
DT 03-AUG-2022, entry version 121.
DE RecName: Full=Glutamate decarboxylase alpha;
DE Short=GAD-alpha;
DE EC=4.1.1.15;
GN Name=gadA; Synonyms=gadS; OrderedLocusNames=Z4930, ECs4397;
OS Escherichia coli O157:H7.
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=83334;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=O157:H7 / EDL933 / ATCC 700927 / EHEC;
RX PubMed=11206551; DOI=10.1038/35054089;
RA Perna N.T., Plunkett G. III, Burland V., Mau B., Glasner J.D., Rose D.J.,
RA Mayhew G.F., Evans P.S., Gregor J., Kirkpatrick H.A., Posfai G.,
RA Hackett J., Klink S., Boutin A., Shao Y., Miller L., Grotbeck E.J.,
RA Davis N.W., Lim A., Dimalanta E.T., Potamousis K., Apodaca J.,
RA Anantharaman T.S., Lin J., Yen G., Schwartz D.C., Welch R.A.,
RA Blattner F.R.;
RT "Genome sequence of enterohaemorrhagic Escherichia coli O157:H7.";
RL Nature 409:529-533(2001).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=O157:H7 / Sakai / RIMD 0509952 / EHEC;
RX PubMed=11258796; DOI=10.1093/dnares/8.1.11;
RA Hayashi T., Makino K., Ohnishi M., Kurokawa K., Ishii K., Yokoyama K.,
RA Han C.-G., Ohtsubo E., Nakayama K., Murata T., Tanaka M., Tobe T., Iida T.,
RA Takami H., Honda T., Sasakawa C., Ogasawara N., Yasunaga T., Kuhara S.,
RA Shiba T., Hattori M., Shinagawa H.;
RT "Complete genome sequence of enterohemorrhagic Escherichia coli O157:H7 and
RT genomic comparison with a laboratory strain K-12.";
RL DNA Res. 8:11-22(2001).
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 bacteria
CC (By similarity). {ECO:0000250}.
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 -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000250};
CC -!- SUBUNIT: Homohexamer. {ECO:0000250}.
CC -!- INDUCTION: By acidic conditions. Expression is regulated by a complex
CC system involving RpoS, cAMP, CRP, EvgAS, H-NS, GadE, GadW and GadX. The
CC level of involvement for each regulator varies depending upon the
CC growth phase and the medium (By similarity). {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the group II decarboxylase family.
CC {ECO:0000305}.
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DR EMBL; AE005174; AAG58658.1; -; Genomic_DNA.
DR EMBL; BA000007; BAB37820.1; -; Genomic_DNA.
DR PIR; E91178; E91178.
DR PIR; F86024; F86024.
DR RefSeq; NP_312424.1; NC_002695.1.
DR RefSeq; WP_000372242.1; NZ_SWKA01000005.1.
DR AlphaFoldDB; P58228; -.
DR SMR; P58228; -.
DR STRING; 155864.EDL933_4769; -.
DR EnsemblBacteria; AAG58658; AAG58658; Z4930.
DR EnsemblBacteria; BAB37820; BAB37820; ECs_4397.
DR GeneID; 915746; -.
DR KEGG; ece:Z4930; -.
DR KEGG; ecs:ECs_4397; -.
DR PATRIC; fig|386585.9.peg.4596; -.
DR eggNOG; COG0076; Bacteria.
DR HOGENOM; CLU_019582_0_0_6; -.
DR OMA; IIWRDES; -.
DR Proteomes; UP000000558; Chromosome.
DR Proteomes; UP000002519; 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 Gene3D; 3.40.640.10; -; 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 PANTHER; PTHR43321; PTHR43321; 1.
DR Pfam; PF00282; Pyridoxal_deC; 1.
DR SUPFAM; SSF53383; SSF53383; 1.
DR TIGRFAMs; TIGR01788; Glu-decarb-GAD; 1.
DR PROSITE; PS00392; DDC_GAD_HDC_YDC; 1.
PE 3: Inferred from homology;
KW Decarboxylase; Lyase; Pyridoxal phosphate; Reference proteome.
FT CHAIN 1..466
FT /note="Glutamate decarboxylase alpha"
FT /id="PRO_0000146980"
FT BINDING 62
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 83
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 126..127
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 212
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 275
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT MOD_RES 276
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000250"
SQ SEQUENCE 466 AA; 52699 MW; C7F9623DBB24E489 CRC64;
MDQKLLTDFR SELLDSRFGA KAISTIAESK RFPLHEMRDD VAFQIINDEL YLDGNARQNL
ATFCQTWDDE 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 KLKEGEDPGY TLYDLSERLR LRGWQVPAFT LGGEATDIVV
MRIMCRRGFE MDFAELLLED YKASLKYLSD HPKLQGIAQQ NSFKHT
