ID   ALR_MYCAV               Reviewed;         388 AA.
AC   Q9L888;
DT   27-APR-2001, integrated into UniProtKB/Swiss-Prot.
DT   05-MAR-2002, sequence version 2.
DT   03-AUG-2022, entry version 109.
DE   RecName: Full=Alanine racemase {ECO:0000255|HAMAP-Rule:MF_01201};
DE            EC=5.1.1.1 {ECO:0000255|HAMAP-Rule:MF_01201};
GN   Name=alr;
OS   Mycobacterium avium.
OC   Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC   Mycobacterium; Mycobacterium avium complex (MAC).
OX   NCBI_TaxID=1764;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], FUNCTION, CATALYTIC ACTIVITY, ACTIVITY
RP   REGULATION, AND BIOPHYSICOCHEMICAL PROPERTIES.
RC   STRAIN=2151;
RX   PubMed=11267762; DOI=10.1111/j.1574-6968.2001.tb10547.x;
RA   Strych U., Penland R.L., Jimenez M., Krause K.L., Benedik M.J.;
RT   "Characterization of the alanine racemases from two Mycobacteria.";
RL   FEMS Microbiol. Lett. 196:93-98(2001).
CC   -!- FUNCTION: Catalyzes the interconversion of L-alanine and D-alanine.
CC       {ECO:0000269|PubMed:11267762}.
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:0000255|HAMAP-Rule:MF_01201,
CC         ECO:0000269|PubMed:11267762};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01201};
CC   -!- ACTIVITY REGULATION: Inhibited by cycloserine.
CC       {ECO:0000269|PubMed:11267762}.
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       Kinetic parameters:
CC         KM=0.4 mM for D-alanine {ECO:0000269|PubMed:11267762};
CC         KM=0.5 mM for L-alanine {ECO:0000269|PubMed:11267762};
CC         Vmax=1.4 umol/min/mg enzyme toward D-alanine
CC         {ECO:0000269|PubMed:11267762};
CC         Vmax=1.2 umol/min/mg enzyme toward L-alanine
CC         {ECO:0000269|PubMed:11267762};
CC   -!- PATHWAY: Amino-acid biosynthesis; D-alanine biosynthesis; D-alanine
CC       from L-alanine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01201}.
CC   -!- SIMILARITY: Belongs to the alanine racemase family. {ECO:0000255|HAMAP-
CC       Rule:MF_01201}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAF25943.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AF214487; AAF25943.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_033718388.1; NZ_NSFG01000041.1.
DR   AlphaFoldDB; Q9L888; -.
DR   SMR; Q9L888; -.
DR   DrugBank; DB00260; Cycloserine.
DR   SABIO-RK; Q9L888; -.
DR   UniPathway; UPA00042; UER00497.
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   Gene3D; 2.40.37.10; -; 1.
DR   Gene3D; 3.20.20.10; -; 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   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; SSF50621; 1.
DR   SUPFAM; SSF51419; SSF51419; 1.
DR   TIGRFAMs; TIGR00492; alr; 1.
DR   PROSITE; PS00395; ALANINE_RACEMASE; 1.
PE   1: Evidence at protein level;
KW   Isomerase; Pyridoxal phosphate.
FT   CHAIN           1..388
FT                   /note="Alanine racemase"
FT                   /id="PRO_0000114535"
FT   ACT_SITE        44
FT                   /note="Proton acceptor; specific for D-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   ACT_SITE        273
FT                   /note="Proton acceptor; specific for L-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         142
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         321
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   MOD_RES         44
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
SQ   SEQUENCE   388 AA;  41002 MW;  1A978A3C7546CB2A CRC64;
     MAVTPISLTP GVLAEALVDL GAIEHNVRLL CEQARGAQVM AVVKADGYGH GAVQTARAAL
     AAGAAELGVA TVDEALALRA AGISAPVLAW LHPPGIDFRP ALLAGVQIGL SSQRQLDELL
     TAVRDTGRTA TVTVKVDTGL NRNGVPPAQY PSMLTALRRA VAEQAIVPRG LMSHMVYADQ
     PANPVNDVQA QRFTDMLAQA REQGVRFEVA HLSNSSATMS RPDLAFDMVR PGIAVYGLSP
     VPELGDMGLV PAMTVKCTVA LVKSIRAGES VSYGHTWTAQ RDTNLALLPV GYADGIFRSL
     GGRLQVSING RRRPGVGRIC MDQFVVDLGP GRPDVAEGDE AILFGPGSNG EPTAQDWADL
     LGTIHYEVVT SPRGRITRTY REAHTVES