ID   HEM3_METBF              Reviewed;         316 AA.
AC   Q46CH0;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   25-MAY-2022, entry version 97.
DE   RecName: Full=Probable 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=Mbar_A1465;
OS   Methanosarcina barkeri (strain Fusaro / DSM 804).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX   NCBI_TaxID=269797;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Fusaro / DSM 804;
RX   PubMed=16980466; DOI=10.1128/jb.00810-06;
RA   Maeder D.L., Anderson I., Brettin T.S., Bruce D.C., Gilna P., Han C.S.,
RA   Lapidus A., Metcalf W.W., Saunders E., Tapia R., Sowers K.R.;
RT   "The Methanosarcina barkeri genome: comparative analysis with
RT   Methanosarcina acetivorans and Methanosarcina mazei reveals extensive
RT   rearrangement within methanosarcinal genomes.";
RL   J. Bacteriol. 188:7922-7931(2006).
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   -!- 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; CP000099; AAZ70422.1; -; Genomic_DNA.
DR   RefSeq; WP_011306468.1; NC_007355.1.
DR   AlphaFoldDB; Q46CH0; -.
DR   SMR; Q46CH0; -.
DR   STRING; 269797.Mbar_A1465; -.
DR   EnsemblBacteria; AAZ70422; AAZ70422; Mbar_A1465.
DR   GeneID; 3627746; -.
DR   KEGG; mba:Mbar_A1465; -.
DR   eggNOG; arCOG04299; Archaea.
DR   HOGENOM; CLU_019704_1_0_2; -.
DR   OMA; LWQANHI; -.
DR   OrthoDB; 95523at2157; -.
DR   UniPathway; UPA00251; UER00319.
DR   GO; GO:0004418; F:hydroxymethylbilane synthase activity; IEA:UniProtKB-UniRule.
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; Transferase.
FT   CHAIN           1..316
FT                   /note="Probable porphobilinogen deaminase"
FT                   /id="PRO_0000304302"
FT   MOD_RES         234
FT                   /note="S-(dipyrrolylmethanemethyl)cysteine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00260"
SQ   SEQUENCE   316 AA;  34488 MW;  C7AD329B39CE200B CRC64;
     MIIGTRGSQL ALAQAETVAR LLKAKGVETS LKIIKTSGDR FTDRPLHAVS SGVGAFVREL
     DEVMLEGKID IAVHSMKDMP TIRPPTLPTV AVLKRDTPFD LLLTYDGTPL DELSEQSIIG
     TSSLRRAAQI KRYRPDLVTQ DLRGNIDTRL RKLKEGKYDG ILLAKAGLER MGWELEGEIL
     SPDFFCPSPN QGTIAVVTRA ETEAEAAVSR LDHTDSRIAT EIERILISEL GGGCTTPIGS
     YAEIMPDRKK LHVRAEVLSL DGEETVGINE FIPMAGGIEK ARELGSSLVH MGGKKLADEA
     LMQLSRDSCD SNDLHE