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CYSG3_AERHH
ID   CYSG3_AERHH             Reviewed;         468 AA.
AC   A0KQJ4;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-DEC-2006, sequence version 1.
DT   03-AUG-2022, entry version 105.
DE   RecName: Full=Siroheme synthase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Uroporphyrinogen-III C-methyltransferase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE              Short=Urogen III methylase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE              EC=2.1.1.107 {ECO:0000255|HAMAP-Rule:MF_01646};
DE     AltName: Full=SUMT 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE     AltName: Full=Uroporphyrinogen III methylase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE              Short=UROM 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Precorrin-2 dehydrogenase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE              EC=1.3.1.76 {ECO:0000255|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Sirohydrochlorin ferrochelatase 3 {ECO:0000255|HAMAP-Rule:MF_01646};
DE              EC=4.99.1.4 {ECO:0000255|HAMAP-Rule:MF_01646};
GN   Name=cysG3 {ECO:0000255|HAMAP-Rule:MF_01646}; OrderedLocusNames=AHA_4121;
OS   Aeromonas hydrophila subsp. hydrophila (strain ATCC 7966 / DSM 30187 / BCRC
OS   13018 / CCUG 14551 / JCM 1027 / KCTC 2358 / NCIMB 9240 / NCTC 8049).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Aeromonadales;
OC   Aeromonadaceae; Aeromonas.
OX   NCBI_TaxID=380703;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 7966 / DSM 30187 / BCRC 13018 / CCUG 14551 / JCM 1027 / KCTC
RC   2358 / NCIMB 9240 / NCTC 8049;
RX   PubMed=16980456; DOI=10.1128/jb.00621-06;
RA   Seshadri R., Joseph S.W., Chopra A.K., Sha J., Shaw J., Graf J., Haft D.H.,
RA   Wu M., Ren Q., Rosovitz M.J., Madupu R., Tallon L., Kim M., Jin S.,
RA   Vuong H., Stine O.C., Ali A., Horneman A.J., Heidelberg J.F.;
RT   "Genome sequence of Aeromonas hydrophila ATCC 7966T: jack of all trades.";
RL   J. Bacteriol. 188:8272-8282(2006).
CC   -!- FUNCTION: Multifunctional enzyme that catalyzes the SAM-dependent
CC       methylations of uroporphyrinogen III at position C-2 and C-7 to form
CC       precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring
CC       dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it
CC       catalyzes the ferrochelation of sirohydrochlorin to yield siroheme.
CC       {ECO:0000255|HAMAP-Rule:MF_01646}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 S-adenosyl-L-methionine + uroporphyrinogen III = H(+) +
CC         precorrin-2 + 2 S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:32459,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57308, ChEBI:CHEBI:57856,
CC         ChEBI:CHEBI:58827, ChEBI:CHEBI:59789; EC=2.1.1.107;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01646};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=NAD(+) + precorrin-2 = 2 H(+) + NADH + sirohydrochlorin;
CC         Xref=Rhea:RHEA:15613, ChEBI:CHEBI:15378, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57945, ChEBI:CHEBI:58351, ChEBI:CHEBI:58827; EC=1.3.1.76;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01646};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 H(+) + siroheme = Fe(2+) + sirohydrochlorin;
CC         Xref=Rhea:RHEA:24360, ChEBI:CHEBI:15378, ChEBI:CHEBI:29033,
CC         ChEBI:CHEBI:58351, ChEBI:CHEBI:60052; EC=4.99.1.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01646};
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       precorrin-2 from uroporphyrinogen III: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_01646}.
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       sirohydrochlorin from precorrin-2: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; siroheme from sirohydrochlorin: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01646}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the precorrin-2
CC       dehydrogenase / sirohydrochlorin ferrochelatase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01646}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the precorrin
CC       methyltransferase family. {ECO:0000255|HAMAP-Rule:MF_01646}.
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DR   EMBL; CP000462; ABK37547.1; -; Genomic_DNA.
DR   RefSeq; WP_011707782.1; NC_008570.1.
DR   RefSeq; YP_858545.1; NC_008570.1.
DR   AlphaFoldDB; A0KQJ4; -.
DR   SMR; A0KQJ4; -.
DR   STRING; 380703.AHA_4121; -.
DR   EnsemblBacteria; ABK37547; ABK37547; AHA_4121.
DR   KEGG; aha:AHA_4121; -.
DR   PATRIC; fig|380703.7.peg.4081; -.
DR   eggNOG; COG0007; Bacteria.
DR   eggNOG; COG1648; Bacteria.
DR   HOGENOM; CLU_011276_2_0_6; -.
DR   OMA; GRFMAQE; -.
DR   UniPathway; UPA00148; UER00211.
DR   UniPathway; UPA00148; UER00222.
DR   UniPathway; UPA00262; UER00211.
DR   UniPathway; UPA00262; UER00222.
DR   UniPathway; UPA00262; UER00376.
DR   Proteomes; UP000000756; Chromosome.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0043115; F:precorrin-2 dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0051266; F:sirohydrochlorin ferrochelatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0004851; F:uroporphyrin-III C-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009236; P:cobalamin biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR   GO; GO:0019354; P:siroheme biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd11642; SUMT; 1.
DR   Gene3D; 1.10.8.210; -; 1.
DR   Gene3D; 3.30.950.10; -; 1.
DR   Gene3D; 3.40.1010.10; -; 1.
DR   HAMAP; MF_01646; Siroheme_synth; 1.
DR   InterPro; IPR000878; 4pyrrol_Mease.
DR   InterPro; IPR035996; 4pyrrol_Methylase_sf.
DR   InterPro; IPR014777; 4pyrrole_Mease_sub1.
DR   InterPro; IPR014776; 4pyrrole_Mease_sub2.
DR   InterPro; IPR006366; CobA/CysG_C.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR037115; Sirohaem_synt_dimer_dom_sf.
DR   InterPro; IPR012409; Sirohaem_synth.
DR   InterPro; IPR028281; Sirohaem_synthase_central.
DR   InterPro; IPR019478; Sirohaem_synthase_dimer_dom.
DR   InterPro; IPR006367; Sirohaem_synthase_N.
DR   InterPro; IPR003043; Uropor_MeTrfase_CS.
DR   Pfam; PF10414; CysG_dimeriser; 1.
DR   Pfam; PF14824; Sirohm_synth_M; 1.
DR   Pfam; PF00590; TP_methylase; 1.
DR   PIRSF; PIRSF036426; Sirohaem_synth; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   SUPFAM; SSF53790; SSF53790; 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; Lyase; Methyltransferase; Multifunctional enzyme;
KW   NAD; Oxidoreductase; Phosphoprotein; Porphyrin biosynthesis;
KW   Reference proteome; S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..468
FT                   /note="Siroheme synthase 3"
FT                   /id="PRO_0000330488"
FT   REGION          1..204
FT                   /note="Precorrin-2 dehydrogenase /sirohydrochlorin
FT                   ferrochelatase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   REGION          216..468
FT                   /note="Uroporphyrinogen-III C-methyltransferase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   ACT_SITE        248
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   ACT_SITE        270
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         22..23
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         43..44
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         225
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         301..303
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         306
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         331..332
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         383
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   BINDING         412
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
FT   MOD_RES         128
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01646"
SQ   SEQUENCE   468 AA;  49807 MW;  B9848BE34016C651 CRC64;
     MDYLPIFCRL DNKPVLLVGG GEVAERKARL LLDAGAQLTV VAPELDPELA ELAANGSIEW
     LAGEFAPQQL TGKWLVVAAT DRREVNALVY QSANQARIFA NVVDDPKRSS FIMPSIIDRS
     PLMVAISSGG KAPVLARLLR EKLEALLPQH LGAVAAFAGS LRERVKARFA SMGERRRFWE
     RLLGADRLGQ ALARGDSASA NQLADSLFAD ESQSGGEVVL VGAGPGDPGL LTLHALRQMQ
     QADVVVYDRL VSDEVMALVR RDARRIFVGK QAGNHCVPQE GINQLLLDEA KKGQRVVRLK
     GGDPFIFGRG GEELETLVGS GIGFQVVPGI TAASGCAAYA GIPLTHRDHA QSVRFVTAHG
     KGGAQDLDWP LLAKDKQTLV FYMGLSSCTT IREQLLTHGK AGDTPVALIE RGTQPSQRVI
     RGTLAQLPEL ALGVESPALI MVGSVVTLAD QLAWFGQGGA ADAALASA
 
 
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