ID   ALR_HELPH               Reviewed;         377 AA.
AC   Q1CST1;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   27-MAR-2024, entry version 94.
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=HPAG1_0924;
OS   Helicobacter pylori (strain HPAG1).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=357544;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HPAG1;
RX   PubMed=16788065; DOI=10.1073/pnas.0603784103;
RA   Oh J.D., Kling-Baeckhed H., Giannakis M., Xu J., Fulton R.S., Fulton L.A.,
RA   Cordum H.S., Wang C., Elliott G., Edwards J., Mardis E.R., Engstrand L.G.,
RA   Gordon J.I.;
RT   "The complete genome sequence of a chronic atrophic gastritis Helicobacter
RT   pylori strain: evolution during disease progression.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:9999-10004(2006).
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; CP000241; ABF84991.1; -; Genomic_DNA.
DR   RefSeq; WP_000917930.1; NC_008086.1.
DR   AlphaFoldDB; Q1CST1; -.
DR   SMR; Q1CST1; -.
DR   KEGG; hpa:HPAG1_0924; -.
DR   HOGENOM; CLU_028393_2_2_7; -.
DR   UniPathway; UPA00042; UER00497.
DR   Proteomes; UP000008835; 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; Pyridoxal phosphate.
FT   CHAIN           1..377
FT                   /note="Alanine racemase"
FT                   /id="PRO_1000065993"
FT   ACT_SITE        37
FT                   /note="Proton acceptor; specific for D-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   ACT_SITE        271
FT                   /note="Proton acceptor; specific for L-alanine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         135
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   BINDING         319
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
FT   MOD_RES         37
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01201"
SQ   SEQUENCE   377 AA;  41730 MW;  2B87724DE32EA433 CRC64;
     MLKRASFVEV NSASLRHNFS AVKSIVPKDA HIMAVVKANA YGAGAIKASE IFLQEGANYL
     GVAALDEALE LRSHFPKTPI LILGYSPNAN ASMLIDNDLS AMVFSLEQAE VFSQMALKSQ
     KRLKVHLKID TGMHRLGLEP NFKSIETIKK IRALKGLEIE GIFTHLSNAD AKIKTHAKNQ
     MKAFNAFLEQ LLDQKIEFQY RHAYNSAGIL SLCNGNENRL LNLYRPGIML YGFYPSNGMK
     ESCPTILKNV ISLKAQIVQI RSVKKGEFIG YGEHFYTNEE TLVGVLALGY ADGLMRALGN
     RIQVAINNQL APLIGKVCMD QCFVKLNDIQ AKEGDEVILF GDKSARANDA SEIAALLNTI
     AYETISTLSK RLERVYI
//