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Database: UniProt
Entry: A0A177MWD9_9GAMM
LinkDB: A0A177MWD9_9GAMM
Original site: A0A177MWD9_9GAMM 
ID   A0A177MWD9_9GAMM        Unreviewed;       464 AA.
AC   A0A177MWD9;
DT   07-SEP-2016, integrated into UniProtKB/TrEMBL.
DT   07-SEP-2016, sequence version 1.
DT   24-JAN-2024, entry version 45.
DE   RecName: Full=Siroheme synthase {ECO:0000256|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Uroporphyrinogen-III C-methyltransferase {ECO:0000256|HAMAP-Rule:MF_01646};
DE              Short=Urogen III methylase {ECO:0000256|HAMAP-Rule:MF_01646};
DE              EC=2.1.1.107 {ECO:0000256|HAMAP-Rule:MF_01646};
DE     AltName: Full=SUMT {ECO:0000256|HAMAP-Rule:MF_01646};
DE     AltName: Full=Uroporphyrinogen III methylase {ECO:0000256|HAMAP-Rule:MF_01646};
DE              Short=UROM {ECO:0000256|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Precorrin-2 dehydrogenase {ECO:0000256|HAMAP-Rule:MF_01646};
DE              EC=1.3.1.76 {ECO:0000256|HAMAP-Rule:MF_01646};
DE   Includes:
DE     RecName: Full=Sirohydrochlorin ferrochelatase {ECO:0000256|HAMAP-Rule:MF_01646};
DE              EC=4.99.1.4 {ECO:0000256|HAMAP-Rule:MF_01646};
GN   Name=cysG {ECO:0000256|HAMAP-Rule:MF_01646};
GN   ORFNames=A1359_18125 {ECO:0000313|EMBL:OAI09895.1};
OS   Methylomonas lenta.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Methylococcales;
OC   Methylococcaceae; Methylomonas.
OX   NCBI_TaxID=980561 {ECO:0000313|EMBL:OAI09895.1, ECO:0000313|Proteomes:UP000078476};
RN   [1] {ECO:0000313|EMBL:OAI09895.1, ECO:0000313|Proteomes:UP000078476}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=R-45370 {ECO:0000313|EMBL:OAI09895.1,
RC   ECO:0000313|Proteomes:UP000078476};
RA   Ploux O.;
RL   Submitted (MAR-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|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:0000256|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:0000256|ARBA:ARBA00001156, ECO:0000256|HAMAP-
CC         Rule:MF_01646};
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       precorrin-2 from uroporphyrinogen III: step 1/1. {ECO:0000256|HAMAP-
CC       Rule:MF_01646}.
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       sirohydrochlorin from precorrin-2: step 1/1. {ECO:0000256|HAMAP-
CC       Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1.
CC       {ECO:0000256|ARBA:ARBA00025705, ECO:0000256|HAMAP-Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; siroheme from sirohydrochlorin: step 1/1.
CC       {ECO:0000256|HAMAP-Rule:MF_01646}.
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; siroheme
CC       biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.
CC       {ECO:0000256|ARBA:ARBA00005010, ECO:0000256|HAMAP-Rule:MF_01646}.
CC   -!- SIMILARITY: Belongs to the precorrin methyltransferase family.
CC       {ECO:0000256|ARBA:ARBA00005879, ECO:0000256|RuleBase:RU003960}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the precorrin
CC       methyltransferase family. {ECO:0000256|HAMAP-Rule:MF_01646}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the precorrin-2
CC       dehydrogenase / sirohydrochlorin ferrochelatase family.
CC       {ECO:0000256|HAMAP-Rule:MF_01646}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:OAI09895.1}.
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DR   EMBL; LUUI01000163; OAI09895.1; -; Genomic_DNA.
DR   RefSeq; WP_066988035.1; NZ_LUUI01000163.1.
DR   AlphaFoldDB; A0A177MWD9; -.
DR   STRING; 980561.A1359_18125; -.
DR   OrthoDB; 9815856at2; -.
DR   UniPathway; UPA00148; UER00211.
DR   UniPathway; UPA00262; UER00211.
DR   Proteomes; UP000078476; Unassembled WGS sequence.
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; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR   Gene3D; 1.10.8.210; Sirohaem synthase, dimerisation domain; 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   NCBIfam; TIGR01469; cobA_cysG_Cterm; 1.
DR   NCBIfam; TIGR01470; cysG_Nterm; 1.
DR   PANTHER; PTHR45790:SF1; SIROHEME SYNTHASE; 1.
DR   PANTHER; PTHR45790; SIROHEME SYNTHASE-RELATED; 1.
DR   Pfam; PF10414; CysG_dimeriser; 1.
DR   Pfam; PF13241; NAD_binding_7; 1.
DR   Pfam; PF14824; Sirohm_synth_M; 1.
DR   Pfam; PF00590; TP_methylase; 1.
DR   PIRSF; PIRSF036426; Sirohaem_synth; 1.
DR   SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR   SUPFAM; SSF75615; Siroheme synthase middle domains-like; 1.
DR   SUPFAM; SSF53790; Tetrapyrrole methylase; 1.
DR   PROSITE; PS00840; SUMT_2; 1.
PE   3: Inferred from homology;
KW   Cobalamin biosynthesis {ECO:0000256|ARBA:ARBA00022573, ECO:0000256|HAMAP-
KW   Rule:MF_01646};
KW   Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_01646};
KW   Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|HAMAP-
KW   Rule:MF_01646};
KW   Multifunctional enzyme {ECO:0000256|ARBA:ARBA00023268, ECO:0000256|HAMAP-
KW   Rule:MF_01646};
KW   NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|HAMAP-Rule:MF_01646};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW   Rule:MF_01646}; Phosphoprotein {ECO:0000256|HAMAP-Rule:MF_01646};
KW   Porphyrin biosynthesis {ECO:0000256|ARBA:ARBA00023244, ECO:0000256|HAMAP-
KW   Rule:MF_01646}; Reference proteome {ECO:0000313|Proteomes:UP000078476};
KW   S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691, ECO:0000256|HAMAP-
KW   Rule:MF_01646};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_01646}.
FT   DOMAIN          125..146
FT                   /note="Siroheme synthase central"
FT                   /evidence="ECO:0000259|Pfam:PF14824"
FT   DOMAIN          150..207
FT                   /note="Sirohaem synthase dimerisation"
FT                   /evidence="ECO:0000259|Pfam:PF10414"
FT   DOMAIN          219..428
FT                   /note="Tetrapyrrole methylase"
FT                   /evidence="ECO:0000259|Pfam:PF00590"
FT   REGION          1..203
FT                   /note="Precorrin-2 dehydrogenase / sirohydrochlorin
FT                   ferrochelatase"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   REGION          217..464
FT                   /note="Uroporphyrinogen-III C-methyltransferase"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   ACT_SITE        249
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646,
FT                   ECO:0000256|PIRSR:PIRSR036426-1"
FT   ACT_SITE        271
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646,
FT                   ECO:0000256|PIRSR:PIRSR036426-1"
FT   BINDING         22..23
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         43..44
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         226
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         302..304
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         307
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         332..333
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         384
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   BINDING         413
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
FT   MOD_RES         128
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01646"
SQ   SEQUENCE   464 AA;  50911 MW;  2954C20EABA5EA2E CRC64;
     MDYFPLFLKL KNQPCLVVGA GEIAARKIEL LGRTGAQISV VAEEISEKVL AMQGLLNLNI
     LNKRFNDDDV LNMRLVVSAT NHRATNEQVA AAAEKQHIPV NVVDNPDLCS FIFPAIVDRS
     PLIAAISSGG ASPVLARILR AKIESMIPAA YGRLAQFAEE FRLTVKQHIK QPSQRRIFWE
     QILNGHIAEL VFSGRIQEAE SAFKNQLQQA EKSEKKGEVY LIGAGPGDPD LLTFRALRLL
     QQADVVVYDR LVSDGVMEMV RRDAEKIYVG KQRSNHSLPQ ESINSLLANL ALSGKRVARL
     KGGDPFIFGR GGEEIETLMQ QGIEFQVVPG ITAAAGCASY AGIPLTHRDH SQSCTFVTGH
     LKDGTINLNW KQLAAPNQTI VIYMGLVGLQ TICQALIDHG CPTDHPIALI QQGTTPDQRV
     LTGTLSDLPK QVEHADIKPP TLIIVGTVVL LHEKLNWFKT LKEP
//
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