ID   CYSG_PSEMY              Reviewed;         462 AA.
AC   A4XUX3;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   16-JUN-2009, entry version 18.
DE   RecName: Full=Siroheme synthase;
DE   Includes:
DE     RecName: Full=Uroporphyrinogen-III C-methyltransferase;
DE              Short=Urogen III methylase;
DE              EC=2.1.1.107;
DE     AltName: Full=SUMT;
DE     AltName: Full=Uroporphyrinogen III methylase;
DE              Short=UROM;
DE   Includes:
DE     RecName: Full=Precorrin-2 dehydrogenase;
DE              EC=1.3.1.76;
DE   Includes:
DE     RecName: Full=Sirohydrochlorin ferrochelatase;
DE              EC=4.99.1.4;
GN   Name=cysG; OrderedLocusNames=Pmen_2383;
OS   Pseudomonas mendocina (strain ymp).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=399739;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T.,
RA   Dalin E., Tice H., Pitluck S., Kiss H., Brettin T., Detter J.C.,
RA   Bruce D., Han C., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Mikhailova N., Hersman L., Dubois J., Maurice P.,
RA   Richardson P.;
RT   "Complete sequence of Pseudomonas mendocina ymp.";
RL   Submitted (APR-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Multifunctional enzyme that catalyzes the SAM-dependent
CC       methylation of uroporphyrinogen III at position C-2 and C-7 to
CC       form precorrin-2 and then position C-12 or C-18 to form
CC       trimethylpyrrocorphin 2. It also catalyzes the conversion of
CC       precorrin-2 into siroheme. This reaction consists of the NAD-
CC       dependent oxidation of precorrin-2 into sirohydrochlorin and its
CC       subsequent ferrochelation into siroheme (By similarity).
CC   -!- CATALYTIC ACTIVITY: S-adenosyl-L-methionine + uroporphyrinogen III
CC       = S-adenosyl-L-homocysteine + precorrin-1.
CC   -!- CATALYTIC ACTIVITY: S-adenosyl-L-methionine + precorrin-1 = S-
CC       adenosyl-L-homocysteine + precorrin-2.
CC   -!- CATALYTIC ACTIVITY: Precorrin-2 + NAD(+) = sirohydrochlorin +
CC       NADH.
CC   -!- CATALYTIC ACTIVITY: Siroheme + 2 H(+) = sirohydrochlorin + Fe(2+).
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       precorrin-2 from uroporphyrinogen III: step 1/1.
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       sirohydrochlorin from precorrin-2: step 1/1.
CC   -!- PATHWAY: Porphyrin metabolism; siroheme biosynthesis; precorrin-2
CC       from uroporphyrinogen III: step 1/1.
CC   -!- PATHWAY: Porphyrin metabolism; siroheme biosynthesis; siroheme
CC       from sirohydrochlorin: step 1/1.
CC   -!- PATHWAY: Porphyrin metabolism; siroheme biosynthesis;
CC       sirohydrochlorin from precorrin-2: step 1/1.
CC   -!- SIMILARITY: Belongs to the precorrin methyltransferase family.
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DR   EMBL; CP000680; ABP85139.1; -; Genomic_DNA.
DR   RefSeq; YP_001187871.1; -.
DR   GeneID; 5108223; -.
DR   GenomeReviews; CP000680_GR; Pmen_2383.
DR   KEGG; pmy:Pmen_2383; -.
DR   OMA; A4XUX3; DYAQSAV.
DR   GO; GO:0005488; F:binding; IEA:InterPro.
DR   GO; GO:0043115; F:precorrin-2 dehydrogenase activity; IEA:HAMAP.
DR   GO; GO:0051266; F:sirohydrochlorin ferrochelatase activity; IEA:EC.
DR   GO; GO:0004851; F:uroporphyrin-III C-methyltransferase activity; IEA:HAMAP.
DR   GO; GO:0009236; P:cobalamin biosynthetic process; IEA:HAMAP.
DR   GO; GO:0055114; P:oxidation reduction; IEA:UniProtKB-KW.
DR   GO; GO:0019354; P:siroheme biosynthetic process; IEA:HAMAP.
DR   HAMAP; MF_01646; -; 1.
DR   InterPro; IPR000878; 4pyrrol_Mease.
DR   InterPro; IPR014777; 4pyrrole_Mease_sub1.
DR   InterPro; IPR014776; 4pyrrole_Mease_sub2.
DR   InterPro; IPR006366; CobA_cysG_C.
DR   InterPro; IPR016040; NAD(P)-bd_dom.
DR   InterPro; IPR019478; Sirohaem_synthase_dimer_dom.
DR   InterPro; IPR006367; Sirohaem_synthase_N.
DR   InterPro; IPR003043; Uropor_MeTrfase_CS.
DR   Gene3D; G3DSA:3.40.1010.10; 4pyrrole_Mease_sub1; 1.
DR   Gene3D; G3DSA:3.30.950.10; 4pyrrole_Mease_sub2; 1.
DR   Gene3D; G3DSA:3.40.50.720; NAD(P)-bd; 1.
DR   Pfam; PF10414; CysG_dimeriser; 1.
DR   Pfam; PF00590; TP_methylase; 1.
DR   TIGRFAMs; TIGR01469; cobA_cysG_Cterm; 1.
DR   TIGRFAMs; TIGR01470; cysG_Nterm; 1.
DR   PROSITE; PS00839; SUMT_1; FALSE_NEG.
DR   PROSITE; PS00840; SUMT_2; 1.
PE   3: Inferred from homology;
KW   Cobalamin biosynthesis; Complete proteome; Lyase; Methyltransferase;
KW   Multifunctional enzyme; NAD; Oxidoreductase; Porphyrin biosynthesis;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN         1    462       Siroheme synthase.
FT                                /FTId=PRO_0000330539.
FT   REGION      216    458       Uroporphyrinogen-III C-methyltransferase.
SQ   SEQUENCE   462 AA;  49893 MW;  5301075D68A1D4F6 CRC64;
     MQFLPLFHKL QGRPVLVIGG GEVALRKARL LSDAGARLRV VAPEIRSELQ ELAGADGICL
     RGYASSDLQG VALVIAATDD EPLNARISAE AQAQGIPVNV VDAPALCSVI FPAIVDRSPL
     IVAVSSGGDA PVLARLIRAK IETWIPATYG QLANLGKRFR DRVKQLFPDV QQRRVFWEDV
     FQGQIAESVF AGKPEEGERL LEERLAGAAP RALGEVYLVG AGPGDPDLLT FRALRLMQQA
     DVVLYDRLVA PAIIELCRRD AERIYVGKRR ADHAVPQEQI NQLLIDLARQ GKRVLRLKGG
     DPFIFGRGGE EIEQLAAEDI PFQVVPGITA ASGCAAYAGI PLTHRDHAQS VRFVTGHLKD
     GSSNLPWKDL VAPGQTLVFY MGLVGLYGIC EQLIAHGRSA ATPAALVQQG TTQNQRVFTG
     TLETLPQLVA QHEVHAPTLV IVGEVVTLRD KLAWFEGAQG SL
//