ID   CYSG_PSEF5              Reviewed;         464 AA.
AC   Q4K9V8;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-AUG-2005, sequence version 1.
DT   16-JUN-2009, entry version 30.
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=PFL_3875;
OS   Pseudomonas fluorescens (strain Pf-5 / ATCC BAA-477).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=220664;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=15980861; DOI=10.1038/nbt1110;
RA   Paulsen I.T., Press C.M., Ravel J., Kobayashi D.Y., Myers G.S.A.,
RA   Mavrodi D.V., DeBoy R.T., Seshadri R., Ren Q., Madupu R., Dodson R.J.,
RA   Durkin A.S., Brinkac L.M., Daugherty S.C., Sullivan S.A.,
RA   Rosovitz M.J., Gwinn M.L., Zhou L., Schneider D.J., Cartinhour S.W.,
RA   Nelson W.C., Weidman J., Watkins K., Tran K., Khouri H., Pierson E.A.,
RA   Pierson L.S. III, Thomashow L.S., Loper J.E.;
RT   "Complete genome sequence of the plant commensal Pseudomonas
RT   fluorescens Pf-5.";
RL   Nat. Biotechnol. 23:873-878(2005).
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; CP000076; AAY93139.1; -; Genomic_DNA.
DR   RefSeq; YP_260975.1; -.
DR   GeneID; 3478259; -.
DR   GenomeReviews; CP000076_GR; PFL_3875.
DR   KEGG; pfl:PFL_3875; -.
DR   NMPDR; fig|220664.3.peg.5695; -.
DR   HOGENOM; Q4K9V8; -.
DR   OMA; Q4K9V8; MCRRDAE.
DR   BioCyc; PFLU220664:PFL_3875-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; 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    464       Siroheme synthase.
FT                                /FTId=PRO_0000330537.
FT   REGION      218    460       Uroporphyrinogen-III C-methyltransferase.
SQ   SEQUENCE   464 AA;  49777 MW;  C004C9E75B9CA891 CRC64;
     MEYLPLFHNL RGSRVLVVGG GEIALRKSRL LADAGAQLRV VAPEIEAQLQ ELIVASGGES
     LLRGYVEADL DGCTLIIAAT DDESLNAQVS ADAHRRCVPV NVVDAPALCS VIFPAIVDRS
     PLVIAVSSGG DAPVLARLIR AKLETWIPST YGQLAGLAAR FRAQVKGLFP DVQQRRAFWE
     DVFQGPIADR QLAGQGAEAE RLLQAKIAGK APHAPGEVYL VGAGPGDPDL LTFRALRLMQ
     QADVVLYDRL VAPAILELCR RDAERIYVGK RRADHAVPQE QINQQLVTLA QQGKRVVRLK
     GGDPFIFGRG GEEIEELAAH GIPFQVVPGI TAASGCSAYA GIPLTHRDYA QSVRFVTGHL
     KDGTSNLPWS DLVAPAQTLV FYMGLVGLPT ICEQLIKHGR GADTPAALVQ QGTTSNQRVF
     TGTLGNLPAL VAEHEVHAPT LVIVGEVVQL REKLAWFEGA QSEV
//