ID   MTRE_METM7              Reviewed;         299 AA.
AC   A6VHE8;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   25-MAY-2022, entry version 73.
DE   RecName: Full=Tetrahydromethanopterin S-methyltransferase subunit E {ECO:0000255|HAMAP-Rule:MF_01098};
DE            EC=2.1.1.86 {ECO:0000255|HAMAP-Rule:MF_01098};
DE   AltName: Full=N5-methyltetrahydromethanopterin--coenzyme M methyltransferase subunit E {ECO:0000255|HAMAP-Rule:MF_01098};
GN   Name=mtrE {ECO:0000255|HAMAP-Rule:MF_01098}; OrderedLocusNames=MmarC7_0807;
OS   Methanococcus maripaludis (strain C7 / ATCC BAA-1331).
OC   Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC   Methanococcaceae; Methanococcus.
OX   NCBI_TaxID=426368;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=C7 / ATCC BAA-1331;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Clum A., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Anderson I., Sieprawska-Lupa M., Whitman W.B., Richardson P.;
RT   "Complete sequence of Methanococcus maripaludis C7.";
RL   Submitted (JUN-2007) to the EMBL/GenBank/DDBJ databases.
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:0000255|HAMAP-Rule:MF_01098}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01098};
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:0000255|HAMAP-Rule:MF_01098}.
CC   -!- SUBUNIT: The complex is composed of 8 subunits; MtrA, MtrB, MtrC, MtrD,
CC       MtrE, MtrF, MtrG and MtrH. {ECO:0000255|HAMAP-Rule:MF_01098}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01098};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01098}.
CC   -!- SIMILARITY: Belongs to the MtrE family. {ECO:0000255|HAMAP-
CC       Rule:MF_01098}.
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DR   EMBL; CP000745; ABR65874.1; -; Genomic_DNA.
DR   RefSeq; WP_011977192.1; NC_009637.1.
DR   AlphaFoldDB; A6VHE8; -.
DR   STRING; 426368.MmarC7_0807; -.
DR   EnsemblBacteria; ABR65874; ABR65874; MmarC7_0807.
DR   GeneID; 5328166; -.
DR   KEGG; mmz:MmarC7_0807; -.
DR   eggNOG; arCOG04870; Archaea.
DR   HOGENOM; CLU_958513_0_0_2; -.
DR   OMA; QMGNIHR; -.
DR   OrthoDB; 50292at2157; -.
DR   UniPathway; UPA00640; UER00698.
DR   GO; GO:0005737; C:cytoplasm; IEA:InterPro.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0012506; C:vesicle membrane; IEA:InterPro.
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   GO; GO:0006814; P:sodium ion transport; IEA:InterPro.
DR   HAMAP; MF_01098; MtrE; 1.
DR   InterPro; IPR005780; MeTrfase_E.
DR   Pfam; PF04206; MtrE; 1.
DR   PIRSF; PIRSF016509; MtrE; 1.
DR   TIGRFAMs; TIGR01113; mtrE; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; Methanogenesis; Methyltransferase;
KW   One-carbon metabolism; Transferase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..299
FT                   /note="Tetrahydromethanopterin S-methyltransferase subunit
FT                   E"
FT                   /id="PRO_1000064945"
FT   TRANSMEM        57..77
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
FT   TRANSMEM        80..100
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
FT   TRANSMEM        133..153
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
FT   TRANSMEM        158..178
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
FT   TRANSMEM        226..246
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
FT   TRANSMEM        262..282
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01098"
SQ   SEQUENCE   299 AA;  31050 MW;  228BD259EDCA7395 CRC64;
     MDPTLISLGA LALAGAAATV SGCAEDLESD VGSQSNPNSQ VQLGPQMGNI HRYFNKAISG
     EPVSYGLYVA VAGTIAWALI NAGLNAVLAI IVGSGVAAIV HGAYSVSAFL GRIVGQSKKF
     GQPVYMDVLT SHIGPIVGHG FIAVFTMTLA AYLATTALGN PFPLPLVALI FGITVGAIGS
     STGDVHYGAE REYQKYPFGG GIPVANQGDI DIYAEYGVRN GLDSSYFCSR FGGPLTGLCF
     GLIIFLDGWR SILGNIVGGD LVTKTSIALL VGLLVVAVAA VINRKLEVYA RNKYGPYRN