ID   HEM2_MYCLE              Reviewed;         329 AA.
AC   P46723;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=Delta-aminolevulinic acid dehydratase;
DE            Short=ALAD;
DE            Short=ALADH;
DE            EC=4.2.1.24;
DE   AltName: Full=Porphobilinogen synthase;
GN   Name=hemB; OrderedLocusNames=ML2419; ORFNames=B2168_C3_264;
OS   Mycobacterium leprae (strain TN).
OC   Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC   Mycobacterium.
OX   NCBI_TaxID=272631;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Smith D.R., Robison K.;
RL   Submitted (MAR-1994) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TN;
RX   PubMed=11234002; DOI=10.1038/35059006;
RA   Cole S.T., Eiglmeier K., Parkhill J., James K.D., Thomson N.R.,
RA   Wheeler P.R., Honore N., Garnier T., Churcher C.M., Harris D.E.,
RA   Mungall K.L., Basham D., Brown D., Chillingworth T., Connor R.,
RA   Davies R.M., Devlin K., Duthoy S., Feltwell T., Fraser A., Hamlin N.,
RA   Holroyd S., Hornsby T., Jagels K., Lacroix C., Maclean J., Moule S.,
RA   Murphy L.D., Oliver K., Quail M.A., Rajandream M.A., Rutherford K.M.,
RA   Rutter S., Seeger K., Simon S., Simmonds M., Skelton J., Squares R.,
RA   Squares S., Stevens K., Taylor K., Whitehead S., Woodward J.R.,
RA   Barrell B.G.;
RT   "Massive gene decay in the leprosy bacillus.";
RL   Nature 409:1007-1011(2001).
CC   -!- FUNCTION: Catalyzes an early step in the biosynthesis of tetrapyrroles.
CC       Binds two molecules of 5-aminolevulinate per subunit, each at a
CC       distinct site, and catalyzes their condensation to form porphobilinogen
CC       (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 5-aminolevulinate = H(+) + 2 H2O + porphobilinogen;
CC         Xref=Rhea:RHEA:24064, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:58126, ChEBI:CHEBI:356416; EC=4.2.1.24;
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX
CC       biosynthesis; coproporphyrinogen-III from 5-aminolevulinate: step 1/4.
CC   -!- SUBUNIT: Homooctamer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the ALAD family. {ECO:0000305}.
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DR   EMBL; U00018; AAA17246.1; -; Genomic_DNA.
DR   EMBL; AL583925; CAC31935.1; -; Genomic_DNA.
DR   PIR; S72910; S72910.
DR   RefSeq; NP_302564.1; NC_002677.1.
DR   RefSeq; WP_010908884.1; NC_002677.1.
DR   AlphaFoldDB; P46723; -.
DR   SMR; P46723; -.
DR   STRING; 272631.ML2419; -.
DR   EnsemblBacteria; CAC31935; CAC31935; CAC31935.
DR   KEGG; mle:ML2419; -.
DR   PATRIC; fig|272631.5.peg.4656; -.
DR   Leproma; ML2419; -.
DR   eggNOG; COG0113; Bacteria.
DR   HOGENOM; CLU_035731_0_0_11; -.
DR   OMA; YQMDYAN; -.
DR   UniPathway; UPA00251; UER00318.
DR   Proteomes; UP000000806; Chromosome.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0004655; F:porphobilinogen synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006782; P:protoporphyrinogen IX biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.20.20.70; -; 1.
DR   InterPro; IPR001731; ALAD.
DR   InterPro; IPR030656; ALAD_AS.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   PANTHER; PTHR11458; PTHR11458; 1.
DR   Pfam; PF00490; ALAD; 1.
DR   PIRSF; PIRSF001415; Porphbilin_synth; 1.
DR   PRINTS; PR00144; DALDHYDRTASE.
DR   SMART; SM01004; ALAD; 1.
DR   PROSITE; PS00169; D_ALA_DEHYDRATASE; 1.
PE   3: Inferred from homology;
KW   Heme biosynthesis; Lyase; Magnesium; Metal-binding; Porphyrin biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..329
FT                   /note="Delta-aminolevulinic acid dehydratase"
FT                   /id="PRO_0000140504"
FT   ACT_SITE        202
FT                   /note="Schiff-base intermediate with substrate"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        254
FT                   /note="Schiff-base intermediate with substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         212
FT                   /ligand="5-aminolevulinate"
FT                   /ligand_id="ChEBI:CHEBI:356416"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         223
FT                   /ligand="5-aminolevulinate"
FT                   /ligand_id="ChEBI:CHEBI:356416"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         239
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         280
FT                   /ligand="5-aminolevulinate"
FT                   /ligand_id="ChEBI:CHEBI:356416"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         319
FT                   /ligand="5-aminolevulinate"
FT                   /ligand_id="ChEBI:CHEBI:356416"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   329 AA;  34775 MW;  1E0EBA9498B8609C CRC64;
     MSVSGYPRHR PRRLRSTPAM RRLVAQTSLE PRNLVLPMFV ADGIDELRPI ASMPGVVQHT
     RDSLRRAAVA AVDAGVGGLN LFGVPRDQDK DATGSAGVDP DGILNVALRD LAEDLGDATV
     LMADTCLDEF TDHGHCGVLD GQGRVDNDAT VARYVELAVA QAESGANVVG PSGMMDGQIG
     ALRDGLDSAG YADVAILAYA AKFSSAFYGP FREAVSCSLS GDRRTYQQEP GNAREALREI
     KLDLDEGADI IMIKPASGYL DVVATAAGVS PVPVAAYQVS GEYAMICAAA ANNWIDERAA
     VLESLTSIRR AGADIVFTYW AADVACWLS