ID   B9J0N7_BACCQ            Unreviewed;       389 AA.
AC   B9J0N7;
DT   24-MAR-2009, integrated into UniProtKB/TrEMBL.
DT   24-MAR-2009, sequence version 1.
DT   27-MAR-2024, entry version 92.
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=alr {ECO:0000313|EMBL:ACM10771.1};
GN   OrderedLocusNames=BCQ_0268 {ECO:0000313|EMBL:ACM10771.1};
OS   Bacillus cereus (strain Q1).
OC   Bacteria; Bacillota; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=361100 {ECO:0000313|EMBL:ACM10771.1, ECO:0000313|Proteomes:UP000000441};
RN   [1] {ECO:0000313|EMBL:ACM10771.1, ECO:0000313|Proteomes:UP000000441}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Q1 {ECO:0000313|EMBL:ACM10771.1,
RC   ECO:0000313|Proteomes:UP000000441};
RX   PubMed=19060151; DOI=10.1128/JB.01629-08;
RA   Xiong Z., Jiang Y., Qi D., Lu H., Yang F., Yang J., Chen L., Sun L., Xu X.,
RA   Xue Y., Zhu Y., Jin Q.;
RT   "Complete genome sequence of the extremophilic Bacillus cereus strain Q1
RT   with industrial applications.";
RL   J. Bacteriol. 191:1120-1121(2009).
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   -!- 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|HAMAP-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. {ECO:0000256|HAMAP-
CC       Rule:MF_01201}.
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DR   EMBL; CP000227; ACM10771.1; -; Genomic_DNA.
DR   AlphaFoldDB; B9J0N7; -.
DR   KEGG; bcq:BCQ_0268; -.
DR   HOGENOM; CLU_028393_2_1_9; -.
DR   UniPathway; UPA00042; UER00497.
DR   Proteomes; UP000000441; 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; cd00430; PLPDE_III_AR; 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          249..374
FT                   /note="Alanine racemase C-terminal"
FT                   /evidence="ECO:0000259|SMART:SM01005"
FT   ACT_SITE        41
FT                   /note="Proton acceptor; specific for D-alanine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201"
FT   ACT_SITE        270
FT                   /note="Proton acceptor; specific for L-alanine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201"
FT   BINDING         138
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-52"
FT   BINDING         317
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-52"
FT   MOD_RES         41
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01201,
FT                   ECO:0000256|PIRSR:PIRSR600821-50"
SQ   SEQUENCE   389 AA;  43649 MW;  E26652ECAA0961A3 CRC64;
     MEEAPFYRDT WVEVDLDAIY NNVTHIKEFI PSDVEIFAVV KGNAYGHDYV PVAKTALEAG
     ATRLAVAFLD EALVLRRAGI TAPILVLGPS PPRDINVAAE NDVALTVFQK EWVDEAIKLW
     DGSSTMKYHI NFDSGMGRIG IRERKELKGF LKSLEGAPFL ELEGVYTHFA TADEVETSYF
     DKQYNTFLEQ LSWLKEFGVD PKFVHTANSA ATLRFQGITF NAVRIGIAMY GLSPSVEIRP
     FLPFKLEPAL SLHTKVAHIK QVIKGDGISY NVTYRTKTEE WIATVAIGYA DGWLRRLQGF
     EVLVNGKRVP IVGRVTMDQF MIHLPCKVPL GTKVTLIGRQ GDEYISATEV AEYSGTINYE
     IITTISFRVP RIFIRNGKVV EVINYLNDI
//