ID   D3H1Y7_ECO44            Unreviewed;       356 AA.
AC   D3H1Y7;
DT   23-MAR-2010, integrated into UniProtKB/TrEMBL.
DT   23-MAR-2010, sequence version 1.
DT   27-MAR-2024, entry version 85.
DE   RecName: Full=Alanine racemase {ECO:0000256|HAMAP-Rule:MF_01201};
DE            EC=5.1.1.1 {ECO:0000256|HAMAP-Rule:MF_01201};
GN   Name=dadX {ECO:0000313|EMBL:CBG34059.1};
GN   OrderedLocusNames=EC042_1239 {ECO:0000313|EMBL:CBG34059.1};
OS   Escherichia coli O44:H18 (strain 042 / EAEC).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=216592 {ECO:0000313|EMBL:CBG34059.1, ECO:0000313|Proteomes:UP000001407};
RN   [1] {ECO:0000313|EMBL:CBG34059.1, ECO:0000313|Proteomes:UP000001407}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=042 / EAEC {ECO:0000313|Proteomes:UP000001407};
RX   PubMed=20098708; DOI=10.1371/journal.pone.0008801;
RA   Chaudhuri R.R., Sebaihia M., Hobman J.L., Webber M.A., Leyton D.L.,
RA   Goldberg M.D., Cunningham A.F., Scott-Tucker A., Ferguson P.R.,
RA   Thomas C.M., Frankel G., Tang C.M., Dudley E.G., Roberts I.S., Rasko D.A.,
RA   Pallen M.J., Parkhill J., Nataro J.P., Thomson N.R., Henderson I.R.;
RT   "Complete genome sequence and comparative metabolic profiling of the
RT   prototypical enteroaggregative Escherichia coli strain 042.";
RL   PLoS ONE 5:E8801-E8801(2010).
CC   -!- FUNCTION: Catalyzes the interconversion of L-alanine and D-alanine. May
CC       also act on other amino acids. {ECO:0000256|HAMAP-Rule:MF_01201}.
CC   -!- FUNCTION: Isomerizes L-alanine to D-alanine which is then oxidized to
CC       pyruvate by DadA. {ECO:0000256|ARBA:ARBA00037715}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-alanine = D-alanine; Xref=Rhea:RHEA:20249,
CC         ChEBI:CHEBI:57416, ChEBI:CHEBI:57972; EC=5.1.1.1;
CC         Evidence={ECO:0000256|ARBA:ARBA00000316, ECO:0000256|HAMAP-
CC         Rule:MF_01201};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000256|ARBA:ARBA00001933, ECO:0000256|HAMAP-
CC         Rule:MF_01201, ECO:0000256|PIRSR:PIRSR600821-50};
CC   -!- PATHWAY: Amino-acid biosynthesis; D-alanine biosynthesis; D-alanine
CC       from L-alanine: step 1/1. {ECO:0000256|HAMAP-Rule:MF_01201}.
CC   -!- SIMILARITY: Belongs to the alanine racemase family.
CC       {ECO:0000256|ARBA:ARBA00007880, ECO:0000256|HAMAP-Rule:MF_01201}.
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DR   EMBL; FN554766; CBG34059.1; -; Genomic_DNA.
DR   RefSeq; WP_000197823.1; NC_017626.1.
DR   AlphaFoldDB; D3H1Y7; -.
DR   KEGG; elo:EC042_1239; -.
DR   PATRIC; fig|216592.3.peg.1285; -.
DR   HOGENOM; CLU_028393_1_0_6; -.
DR   UniPathway; UPA00042; UER00497.
DR   Proteomes; UP000001407; Chromosome.
DR   GO; GO:0008784; F:alanine racemase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030632; P:D-alanine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd06827; PLPDE_III_AR_proteobact; 1.
DR   Gene3D; 3.20.20.10; Alanine racemase; 1.
DR   HAMAP; MF_01201; Ala_racemase; 1.
DR   InterPro; IPR000821; Ala_racemase.
DR   InterPro; IPR009006; Ala_racemase/Decarboxylase_C.
DR   InterPro; IPR011079; Ala_racemase_C.
DR   InterPro; IPR001608; Ala_racemase_N.
DR   InterPro; IPR020622; Ala_racemase_pyridoxalP-BS.
DR   InterPro; IPR029066; PLP-binding_barrel.
DR   NCBIfam; TIGR00492; alr; 1.
DR   PANTHER; PTHR30511; ALANINE RACEMASE; 1.
DR   PANTHER; PTHR30511:SF0; ALANINE RACEMASE, CATABOLIC-RELATED; 1.
DR   Pfam; PF00842; Ala_racemase_C; 1.
DR   Pfam; PF01168; Ala_racemase_N; 1.
DR   PRINTS; PR00992; ALARACEMASE.
DR   SMART; SM01005; Ala_racemase_C; 1.
DR   SUPFAM; SSF50621; Alanine racemase C-terminal domain-like; 1.
DR   SUPFAM; SSF51419; PLP-binding barrel; 1.
DR   PROSITE; PS00395; ALANINE_RACEMASE; 1.
PE   3: Inferred from homology;
KW   Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01201};
KW   Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898, ECO:0000256|HAMAP-
KW   Rule:MF_01201}.
FT   DOMAIN          232..356
FT                   /note="Alanine racemase C-terminal"
FT                   /evidence="ECO:0000259|SMART:SM01005"
FT   ACT_SITE        35
FT                   /note="Proton acceptor; specific for D-alanine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201"
FT   ACT_SITE        253
FT                   /note="Proton acceptor; specific for L-alanine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201"
FT   BINDING         130
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-52"
FT   BINDING         301
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-52"
FT   MOD_RES         35
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-50"
SQ   SEQUENCE   356 AA;  38800 MW;  810C13FB8C1AF041 CRC64;
     MTRPIQASLD LQALKQNLSI VRQAAPHARV WSVVKANAYG HGIERIWSAL GATDGFALLN
     LEEAITLRER GWKGPILMLE GFFHAQDLDI YDQHRLTTCV HSNWQLKALQ NARLKAPLDI
     YLKVNSGMNR LGFQPDRVLT VWQQLRAMAN VGEMTLMSHF AEAEHPDGIS GAMARIEQAA
     EGLECRRSLS NSAATLWHPE AHFDWVRPGI ILYGASPSGQ WRDIANTGLR PVMTLSSEII
     GVQTLTAGER VGYGGRYTAR DEQRIGIVAA GYADGYPRHA PTGTPVLVDG VRTMTVGTVS
     MDMLAVDLTP CPQAGIGTPV ELWGKEIKID DVAAAAGTVG YELMCALALR VPVVTV
//