ID   HEM3_SALTY              Reviewed;         313 AA.
AC   P0A1Q8; Q9L6Q2;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 101.
DE   RecName: Full=Porphobilinogen deaminase;
DE            Short=PBG;
DE            EC=2.5.1.61;
DE   AltName: Full=Hydroxymethylbilane synthase;
DE            Short=HMBS;
DE   AltName: Full=Pre-uroporphyrinogen synthase;
GN   Name=hemC; OrderedLocusNames=STM3938; ORFNames=STMD1.53;
OS   Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=99287;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LT2 / SGSC1412 / ATCC 700720;
RX   PubMed=11677609; DOI=10.1038/35101614;
RA   McClelland M., Sanderson K.E., Spieth J., Clifton S.W., Latreille P.,
RA   Courtney L., Porwollik S., Ali J., Dante M., Du F., Hou S., Layman D.,
RA   Leonard S., Nguyen C., Scott K., Holmes A., Grewal N., Mulvaney E.,
RA   Ryan E., Sun H., Florea L., Miller W., Stoneking T., Nhan M., Waterston R.,
RA   Wilson R.K.;
RT   "Complete genome sequence of Salmonella enterica serovar Typhimurium LT2.";
RL   Nature 413:852-856(2001).
CC   -!- FUNCTION: Tetrapolymerization of the monopyrrole PBG into the
CC       hydroxymethylbilane pre-uroporphyrinogen in several discrete steps.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + 4 porphobilinogen = hydroxymethylbilane + 4 NH4(+);
CC         Xref=Rhea:RHEA:13185, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:57845, ChEBI:CHEBI:58126; EC=2.5.1.61;
CC   -!- COFACTOR:
CC       Name=dipyrromethane; Xref=ChEBI:CHEBI:60342; Evidence={ECO:0000250};
CC       Note=Binds 1 dipyrromethane group covalently. {ECO:0000250};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX
CC       biosynthesis; coproporphyrinogen-III from 5-aminolevulinate: step 2/4.
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- MISCELLANEOUS: The porphobilinogen subunits are added to the
CC       dipyrromethane group. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the HMBS family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAF33453.1; Type=Erroneous initiation; Evidence={ECO:0000305};
CC       Sequence=AAL22783.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AF233324; AAF33453.1; ALT_INIT; Genomic_DNA.
DR   EMBL; AE006468; AAL22783.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; NP_462824.1; NC_003197.2.
DR   AlphaFoldDB; P0A1Q8; -.
DR   SMR; P0A1Q8; -.
DR   STRING; 99287.STM3938; -.
DR   PaxDb; P0A1Q8; -.
DR   EnsemblBacteria; AAL22783; AAL22783; STM3938.
DR   GeneID; 1255464; -.
DR   KEGG; stm:STM3938; -.
DR   PATRIC; fig|99287.12.peg.4155; -.
DR   HOGENOM; CLU_019704_0_2_6; -.
DR   PhylomeDB; P0A1Q8; -.
DR   UniPathway; UPA00251; UER00319.
DR   Proteomes; UP000001014; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0004418; F:hydroxymethylbilane synthase activity; IBA:GO_Central.
DR   GO; GO:0006783; P:heme biosynthetic process; IBA:GO_Central.
DR   GO; GO:0018160; P:peptidyl-pyrromethane cofactor linkage; IEA:InterPro.
DR   GO; GO:0006782; P:protoporphyrinogen IX biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.30.160.40; -; 1.
DR   HAMAP; MF_00260; Porphobil_deam; 1.
DR   InterPro; IPR000860; HemC.
DR   InterPro; IPR022419; Porphobilin_deaminase_cofac_BS.
DR   InterPro; IPR022417; Porphobilin_deaminase_N.
DR   InterPro; IPR022418; Porphobilinogen_deaminase_C.
DR   InterPro; IPR036803; Porphobilinogen_deaminase_C_sf.
DR   PANTHER; PTHR11557; PTHR11557; 1.
DR   Pfam; PF01379; Porphobil_deam; 1.
DR   Pfam; PF03900; Porphobil_deamC; 1.
DR   PIRSF; PIRSF001438; 4pyrrol_synth_OHMeBilane_synth; 1.
DR   PRINTS; PR00151; PORPHBDMNASE.
DR   SUPFAM; SSF54782; SSF54782; 1.
DR   TIGRFAMs; TIGR00212; hemC; 1.
DR   PROSITE; PS00533; PORPHOBILINOGEN_DEAM; 1.
PE   3: Inferred from homology;
KW   Porphyrin biosynthesis; Reference proteome; Transferase.
FT   CHAIN           1..313
FT                   /note="Porphobilinogen deaminase"
FT                   /id="PRO_0000142985"
FT   MOD_RES         242
FT                   /note="S-(dipyrrolylmethanemethyl)cysteine"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   313 AA;  33714 MW;  4F4673FFB71FEE3F CRC64;
     MLDNVLRIAT RQSPLALWQA HYVKDALMAT HPGLTVELVP MVTRGDVILD TPLAKVGGKG
     LFVKELEIAL LEKRADIAVH SMKDVPVAFP DGLGLVTICE REDPRDAFVS NKYHSLDDLP
     AGSIVGTSSL RRQCQLAERR PDLIIRSLRG NVGTRLGKLD NGDYDAIILA VAGLKRLGLE
     SRIRTALPPD VSLPAVGQGA VGIECRLDDA RTQALLAPLN HSQTALRVTA ERAMNTRLEG
     GCQVPIGSYA EIINGEIWLR ALVGAPDGSV MVRGERRGSP EQAEQMGISL AEELLENGAR
     AILTEVYNGE TPA