ID   CYSG2_YERPN             Reviewed;         470 AA.
AC   Q1CCP6;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   16-JUN-2009, entry version 29.
DE   RecName: Full=Siroheme synthase 2;
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=cysG2; OrderedLocusNames=YPN_3907;
OS   Yersinia pestis bv. Antiqua (strain Nepal516).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales;
OC   Enterobacteriaceae; Yersinia.
OX   NCBI_TaxID=377628;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16740952; DOI=10.1128/JB.00124-06;
RA   Chain P.S.G., Hu P., Malfatti S.A., Radnedge L., Larimer F.,
RA   Vergez L.M., Worsham P., Chu M.C., Andersen G.L.;
RT   "Complete genome sequence of Yersinia pestis strains Antiqua and
RT   Nepal516: evidence of gene reduction in an emerging pathogen.";
RL   J. Bacteriol. 188:4453-4463(2006).
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.
CC   -----------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution-NoDerivs License
CC   -----------------------------------------------------------------------
DR   EMBL; CP000305; ABG20234.1; -; Genomic_DNA.
DR   RefSeq; YP_649834.1; -.
DR   SMR; Q1CCP6; 1-453.
DR   GeneID; 4125659; -.
DR   GenomeReviews; CP000305_GR; YPN_3907.
DR   KEGG; ypn:YPN_3907; -.
DR   HOGENOM; Q1CCP6; -.
DR   OMA; Q1CCP6; MCRRDAE.
DR   BioCyc; YPES377628:YPN_3907-MON; -.
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; 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    470       Siroheme synthase 2.
FT                                /FTId=PRO_0000330575.
FT   REGION      215    454       Uroporphyrinogen-III C-methyltransferase.
SQ   SEQUENCE   470 AA;  51664 MW;  D28E9E9C1182F316 CRC64;
     MDYFPIFCQL QHKACLLVGG GEIAERKARL LLDAGALVTV NACEFTPQFH HWADQGQLSL
     ISGEFVPELL ADKWLVIAAT DQLSVNALVY QSANQQRIFC NVVDDPKRTS FIMPSIIDRS
     PIMIAVSSGG KAPVLARLLR EKLEALLPQH LGQLAGNLRQ RVKQHFTVMT ERRRFWEKLL
     THDRLAQSLA NNDHVQADQH VEQLFSAPLT DRGEVVLVGA GPGDAGLLTL KGLQQIQQAD
     VVVYDRLVSD EVMNLVRRDA ERIFVGKQSG HHCVPQEQIN QILLQQAQSG KRVVRLKGGD
     PFIFGRGGEE LEELAGYGIP FSVVPGITAA SGCSAYSGIP LTHRDHAQSV RLVTGHAKKE
     GQLDWANLAA EKQTLVFYMG LSQAGEIQQQ LIQHGMPATT QVALVENGTS RHQRVVSGEL
     SQLALLSQQV SSPSLIIVGS VVSLREKLNW FSSRHHDDQP KVTECVAHVG
//