ID   CYSG1_SERP5             Reviewed;         476 AA.
AC   A8G9Y3;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   25-NOV-2008, entry version 13.
DE   RecName: Full=Siroheme synthase 1;
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=cysG1; OrderedLocusNames=Spro_0817;
OS   Serratia proteamaculans (strain 568).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales;
OC   Enterobacteriaceae; Serratia.
OX   NCBI_TaxID=399741;
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., Chain P., Malfatti S., Shin M.,
RA   Vergez L., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Kim E., Taghavi S., Newman L., Vangronsveld J., van der Lelie D.,
RA   Richardson P.;
RT   "Complete sequence of chromosome of Serratia proteamaculans 568.";
RL   Submitted (SEP-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Multifunctional enzyme that catalyze 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 consist 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; CP000826; ABV39923.1; -; Genomic_DNA.
DR   RefSeq; YP_001477051.1; -.
DR   GeneID; 5603444; -.
DR   GenomeReviews; CP000826_GR; Spro_0817.
DR   KEGG; spe:Spro_0817; -.
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; IPR006367; CysG_synth_N.
DR   InterPro; IPR016040; NAD(P)-bd.
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; PF00590; TP_methylase; 1.
DR   TIGRFAMs; TIGR01469; cobA_cysG_Cterm; 1.
DR   TIGRFAMs; TIGR01470; cysG_Nterm; 1.
DR   PROSITE; PS00839; SUMT_1; 1.
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    476       Siroheme synthase 1.
FT                                /FTId=PRO_0000330557.
FT   REGION      221    461       Uroporphyrinogen-III C-methyltransferase.
SQ   SEQUENCE   476 AA;  51267 MW;  2DAB7E09F9A3B2B9 CRC64;
     MDYLPIFADL KQRPVLVVGG GEVAARKVDL LLRAGAEIRI VAQSLSPILE QLSQQGQIHW
     LGQAFAAEQL DEVFLVIAAT DDSALNAEVF SEADKRRVLA NVVDDQPRCS FIFPSIIDRS
     PLVVAVSSSG QAPVLARMLR EKLEALLPAS LGQMAEVAGR WRGQVKQRLN AIGERRRFWE
     KTFGGRFATL VANGQTAEAQ RQLEQDLEQF AQGSEGTQGE IALVGAGPGD VGLLTLRGLQ
     VMQQADVVLY DHLVSDEILD LVRRDAERIC VGKRAGAHSV IQEETNRLLV ELAQQGKRVV
     RLKGGDPFIF GRGGEELQVA AAAGIPFQVV PGVTAAAGAT AYAGIPLTHR DHAQSVTFIT
     GHCRPDGDGL DWADLARARQ TLAIYMGTMK AADISQRLIA HGRAATTPVA VISRGTRADQ
     LVQTGTLQQL EQLAQQAPLP ALLVIGEVVE LHHQIAWFGH QPQAEGVSRP AVVNLA
//