ID   HEM3_CHLCH              Reviewed;         313 AA.
AC   Q3AQF5;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   22-NOV-2005, sequence version 1.
DT   03-AUG-2022, entry version 93.
DE   RecName: Full=Porphobilinogen deaminase {ECO:0000255|HAMAP-Rule:MF_00260};
DE            Short=PBG {ECO:0000255|HAMAP-Rule:MF_00260};
DE            EC=2.5.1.61 {ECO:0000255|HAMAP-Rule:MF_00260};
DE   AltName: Full=Hydroxymethylbilane synthase {ECO:0000255|HAMAP-Rule:MF_00260};
DE            Short=HMBS {ECO:0000255|HAMAP-Rule:MF_00260};
DE   AltName: Full=Pre-uroporphyrinogen synthase {ECO:0000255|HAMAP-Rule:MF_00260};
GN   Name=hemC {ECO:0000255|HAMAP-Rule:MF_00260}; OrderedLocusNames=Cag_1515;
OS   Chlorobium chlorochromatii (strain CaD3).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC   Chlorobium/Pelodictyon group; Chlorobium.
OX   NCBI_TaxID=340177;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CaD3;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Bryant D., Schmutz J., Larimer F.,
RA   Land M., Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of Chlorobium chlorochromatii CaD3.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Tetrapolymerization of the monopyrrole PBG into the
CC       hydroxymethylbilane pre-uroporphyrinogen in several discrete steps.
CC       {ECO:0000255|HAMAP-Rule:MF_00260}.
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         Evidence={ECO:0000255|HAMAP-Rule:MF_00260};
CC   -!- COFACTOR:
CC       Name=dipyrromethane; Xref=ChEBI:CHEBI:60342;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00260};
CC       Note=Binds 1 dipyrromethane group covalently. {ECO:0000255|HAMAP-
CC       Rule:MF_00260};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX
CC       biosynthesis; coproporphyrinogen-III from 5-aminolevulinate: step 2/4.
CC       {ECO:0000255|HAMAP-Rule:MF_00260}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; chlorophyll
CC       biosynthesis. {ECO:0000255|HAMAP-Rule:MF_00260}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00260}.
CC   -!- MISCELLANEOUS: The porphobilinogen subunits are added to the
CC       dipyrromethane group. {ECO:0000255|HAMAP-Rule:MF_00260}.
CC   -!- SIMILARITY: Belongs to the HMBS family. {ECO:0000255|HAMAP-
CC       Rule:MF_00260}.
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DR   EMBL; CP000108; ABB28770.1; -; Genomic_DNA.
DR   RefSeq; WP_011362533.1; NC_007514.1.
DR   AlphaFoldDB; Q3AQF5; -.
DR   SMR; Q3AQF5; -.
DR   STRING; 340177.Cag_1515; -.
DR   EnsemblBacteria; ABB28770; ABB28770; Cag_1515.
DR   KEGG; cch:Cag_1515; -.
DR   eggNOG; COG0181; Bacteria.
DR   HOGENOM; CLU_019704_0_2_10; -.
DR   OMA; LWQANHI; -.
DR   OrthoDB; 1450400at2; -.
DR   UniPathway; UPA00251; UER00319.
DR   UniPathway; UPA00668; -.
DR   GO; GO:0004418; F:hydroxymethylbilane synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015995; P:chlorophyll biosynthetic process; IEA:UniProtKB-UniPathway.
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   Chlorophyll biosynthesis; Porphyrin biosynthesis; Transferase.
FT   CHAIN           1..313
FT                   /note="Porphobilinogen deaminase"
FT                   /id="PRO_0000304226"
FT   MOD_RES         241
FT                   /note="S-(dipyrrolylmethanemethyl)cysteine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00260"
SQ   SEQUENCE   313 AA;  34640 MW;  3FAD2A1A3D3C20CB CRC64;
     MKKQLIIGTR SSPLALWQAE FTKAELSKHY PDMEITLKLV KTTGDVLLDS PLSKIGDMGL
     FTKDIEKHLL AREIDLAVHS LKDVPTSTPE GLIITSFTER EDTRDVIISK GGVKLKDLPP
     NARMATSSLR RMSQLLSVRP DLDIRDIRGN LNTRFQKFDD GEFDAMMLAY AGVYRLNFSD
     RISEILPHDM MLPAVGQGAL GIETRVDDEQ TREIVRILNH STTEYCCRAE RALLRHLQGG
     CQIPIGAYAT FSNGTLKLLA FVGSVDGKTA LRNEITKTGL TSPEQAEEAG IALAEELLKQ
     GADAILSQIR KTC