ID I7L047_METBM Unreviewed; 94 AA.
AC I7L047;
DT 03-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 03-OCT-2012, sequence version 1.
DT 24-JAN-2024, entry version 55.
DE RecName: Full=Tetrahydromethanopterin S-methyltransferase subunit B {ECO:0000256|ARBA:ARBA00015127, ECO:0000256|HAMAP-Rule:MF_01094};
DE EC=2.1.1.86 {ECO:0000256|ARBA:ARBA00012514, ECO:0000256|HAMAP-Rule:MF_01094};
DE AltName: Full=N5-methyltetrahydromethanopterin--coenzyme M methyltransferase subunit B {ECO:0000256|ARBA:ARBA00029818, ECO:0000256|HAMAP-Rule:MF_01094};
GN Name=mtrB {ECO:0000256|HAMAP-Rule:MF_01094,
GN ECO:0000313|EMBL:CCJ36665.1};
GN OrderedLocusNames=BN140_1742 {ECO:0000313|EMBL:CCJ36665.1};
OS Methanoculleus bourgensis (strain ATCC 43281 / DSM 3045 / OCM 15 / MS2)
OS (Methanogenium bourgense).
OC Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC Methanomicrobiales; Methanomicrobiaceae; Methanoculleus.
OX NCBI_TaxID=1201294 {ECO:0000313|EMBL:CCJ36665.1, ECO:0000313|Proteomes:UP000009007};
RN [1] {ECO:0000313|Proteomes:UP000009007}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43281 / DSM 3045 / OCM 15 / MS2
RC {ECO:0000313|Proteomes:UP000009007};
RX PubMed=22965103; DOI=10.1128/JB.01292-12;
RA Maus I., Wibberg D., Stantscheff R., Eikmeyer F.G., Seffner A., Boelter J.,
RA Szczepanowski R., Blom J., Jaenicke S., Konig H., Puhler A., Schluter A.;
RT "Complete genome sequence of the hydrogenotrophic, methanogenic archaeon
RT Methanoculleus bourgensis strain MS2T, isolated from a sewage sludge
RT digester.";
RL J. Bacteriol. 194:5487-5488(2012).
CC -!- FUNCTION: Part of a complex that catalyzes the formation of methyl-
CC coenzyme M and tetrahydromethanopterin from coenzyme M and methyl-
CC tetrahydromethanopterin. This is an energy-conserving, sodium-ion
CC translocating step. {ECO:0000256|ARBA:ARBA00002533, ECO:0000256|HAMAP-
CC Rule:MF_01094}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5-methyl-5,6,7,8-tetrahydromethanopterin + coenzyme M + 2
CC Na(+)(in) = 5,6,7,8-tetrahydromethanopterin + methyl-coenzyme M + 2
CC Na(+)(out); Xref=Rhea:RHEA:53492, ChEBI:CHEBI:29101,
CC ChEBI:CHEBI:58103, ChEBI:CHEBI:58116, ChEBI:CHEBI:58286,
CC ChEBI:CHEBI:58319; EC=2.1.1.86;
CC Evidence={ECO:0000256|ARBA:ARBA00001816, ECO:0000256|HAMAP-
CC Rule:MF_01094};
CC -!- PATHWAY: One-carbon metabolism; methanogenesis from CO(2); methyl-
CC coenzyme M from 5,10-methylene-5,6,7,8-tetrahydromethanopterin: step
CC 2/2. {ECO:0000256|ARBA:ARBA00004839, ECO:0000256|HAMAP-Rule:MF_01094}.
CC -!- SUBUNIT: The complex is composed of 8 subunits; MtrA, MtrB, MtrC, MtrD,
CC MtrE, MtrF, MtrG and MtrH. {ECO:0000256|ARBA:ARBA00011616,
CC ECO:0000256|HAMAP-Rule:MF_01094}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|ARBA:ARBA00004162,
CC ECO:0000256|HAMAP-Rule:MF_01094}; Single-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004162, ECO:0000256|HAMAP-Rule:MF_01094}.
CC Membrane {ECO:0000256|ARBA:ARBA00004167}; Single-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004167}.
CC -!- SIMILARITY: Belongs to the MtrB family. {ECO:0000256|ARBA:ARBA00010027,
CC ECO:0000256|HAMAP-Rule:MF_01094}.
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DR EMBL; HE964772; CCJ36665.1; -; Genomic_DNA.
DR RefSeq; WP_014867639.1; NC_018227.2.
DR AlphaFoldDB; I7L047; -.
DR STRING; 1201294.BN140_1742; -.
DR GeneID; 13355154; -.
DR KEGG; mbg:BN140_1742; -.
DR PATRIC; fig|1201294.9.peg.1910; -.
DR HOGENOM; CLU_171544_1_0_2; -.
DR OMA; TNMVYGF; -.
DR BioCyc; MBOU1201294:BN140_RS08705-MONOMER; -.
DR UniPathway; UPA00640; UER00698.
DR Proteomes; UP000009007; Chromosome.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0030269; F:tetrahydromethanopterin S-methyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019386; P:methanogenesis, from carbon dioxide; IEA:UniProtKB-UniPathway.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01094; MtrB; 1.
DR InterPro; IPR008690; MtrB_MeTrfase.
DR NCBIfam; TIGR04166; methano_MtrB; 1.
DR Pfam; PF05440; MtrB; 1.
DR PIRSF; PIRSF005518; MtrB; 1.
PE 3: Inferred from homology;
KW Cell membrane {ECO:0000256|HAMAP-Rule:MF_01094};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_01094};
KW Methanogenesis {ECO:0000256|HAMAP-Rule:MF_01094};
KW Methyltransferase {ECO:0000256|HAMAP-Rule:MF_01094,
KW ECO:0000313|EMBL:CCJ36665.1};
KW One-carbon metabolism {ECO:0000256|HAMAP-Rule:MF_01094};
KW Reference proteome {ECO:0000313|Proteomes:UP000009007};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_01094, ECO:0000313|EMBL:CCJ36665.1};
KW Transmembrane {ECO:0000256|HAMAP-Rule:MF_01094};
KW Transmembrane helix {ECO:0000256|HAMAP-Rule:MF_01094}.
FT TRANSMEM 74..93
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01094"
SQ SEQUENCE 94 AA; 9773 MW; B3E67E512894BBD9 CRC64;
MAYIQVLPEY GLVVDPMVGV VTTAGVSYTP VIEQVAELEK ITDDLVGMLS GEGNFLASFP
NRDGVLKIAG GVTAFWYGMA VGLLVAGVIA LGLL
//