ID   ALR_RICCN               Reviewed;         355 AA.
AC   Q92JD9;
DT   05-MAR-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2001, sequence version 1.
DT   04-NOV-2026, entry version 128.
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; OrderedLocusNames=RC0128;
OS   Rickettsia conorii (strain ATCC VR-613 / Malish 7).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Alphaproteobacteria;
OC   Rickettsiales; Rickettsiaceae; Rickettsieae; Rickettsia;
OC   spotted fever group.
OX   NCBI_TaxID=272944;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-613 / Malish 7;
RX   PubMed=11557893; DOI=10.1126/science.1061471;
RA   Ogata H., Audic S., Renesto-Audiffren P., Fournier P.-E., Barbe V.,
RA   Samson D., Roux V., Cossart P., Weissenbach J., Claverie J.-M., Raoult D.;
RT   "Mechanisms of evolution in Rickettsia conorii and R. prowazekii.";
RL   Science 293:2093-2098(2001).
CC   -!- FUNCTION: Catalyzes the interconversion of L-alanine and D-alanine. May
CC       also act on other amino acids. {ECO:0000255|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:0000255|HAMAP-Rule:MF_01201};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01201};
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}.
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DR   EMBL; AE006914; AAL02666.1; -; Genomic_DNA.
DR   PIR; H97715; H97715.
DR   RefSeq; WP_010976808.1; NC_003103.1.
DR   AlphaFoldDB; Q92JD9; -.
DR   SMR; Q92JD9; -.
DR   GeneID; 928065; -.
DR   KEGG; rco:RC0128; -.
DR   HOGENOM; CLU_028393_1_1_5; -.
DR   OMA; AACDTIP; -.
DR   UniPathway; UPA00042; UER00497.
DR   Proteomes; UP000000816; Chromosome.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
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-UniRule.
DR   CDD; cd00430; PLPDE_III_AR; 1.
DR   Gene3D; 3.20.20.10; Alanine racemase; 1.
DR   Gene3D; 2.40.37.10; Lyase, Ornithine Decarboxylase, Chain A, domain 1; 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   NCBIfam; NF000792; PRK00053.2-3; 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; Pyridoxal phosphate; Reference proteome.
FT   CHAIN           1..355
FT                   /note="Alanine racemase"
FT                   /id="PRO_0000114556"
FT   ACT_SITE        34
FT                   /note="Proton acceptor; specific for D-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   ACT_SITE        249
FT                   /note="Proton acceptor; specific for L-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         133
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         297
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   MOD_RES         34
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
SQ   SEQUENCE   355 AA;  39488 MW;  63A489ED384081EB CRC64;
     MSLCTVEINL STIKNNYLLL QDICKTSLVG AAVKANGYGL GAVQISKALI EENCRHFFVA
     SSEEGVNLRN ALGLDVNILV LNGVFEHDAL ELIEYNLTPV LNNLKQIEIW QKFSNLKNRL
     LPCYLHFNTG INRLGLSSDE IEQLINDRDL LKGLDLQYII SHLAISEEID NPYNLEQLNR
     FKAYLQYFPN VKASLANSGG IFLGQDYHFD LARPGAALYG LNPLTKNPVT LKAPIIHLQN
     LTLDSHIGYN MTFTTKRDSV IATLPLGYAD GFSRNFSNQG EVFINSRSVP IVGRVSMDLI
     NIDVTDLPPS EIFLGQEAEI IGNYCTPDKI ASIIGTIGYE VLTNLGSRYK RKYIG
//