ID   MTRC_METTH              Reviewed;         267 AA.
AC   O27229;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 126.
DE   RecName: Full=Tetrahydromethanopterin S-methyltransferase subunit C;
DE            EC=2.1.1.86;
DE   AltName: Full=N5-methyltetrahydromethanopterin--coenzyme M methyltransferase subunit C;
GN   Name=mtrC; OrderedLocusNames=MTH_1161;
OS   Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM
OS   10044 / NBRC 100330 / Delta H) (Methanobacterium thermoautotrophicum).
OC   Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC   Methanobacteriales; Methanobacteriaceae; Methanothermobacter.
OX   NCBI_TaxID=187420;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H;
RX   PubMed=9371463; DOI=10.1128/jb.179.22.7135-7155.1997;
RA   Smith D.R., Doucette-Stamm L.A., Deloughery C., Lee H.-M., Dubois J.,
RA   Aldredge T., Bashirzadeh R., Blakely D., Cook R., Gilbert K., Harrison D.,
RA   Hoang L., Keagle P., Lumm W., Pothier B., Qiu D., Spadafora R., Vicare R.,
RA   Wang Y., Wierzbowski J., Gibson R., Jiwani N., Caruso A., Bush D.,
RA   Safer H., Patwell D., Prabhakar S., McDougall S., Shimer G., Goyal A.,
RA   Pietrovski S., Church G.M., Daniels C.J., Mao J.-I., Rice P., Noelling J.,
RA   Reeve J.N.;
RT   "Complete genome sequence of Methanobacterium thermoautotrophicum deltaH:
RT   functional analysis and comparative genomics.";
RL   J. Bacteriol. 179:7135-7155(1997).
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:0000250}.
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   -!- 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.
CC   -!- SUBUNIT: The complex is composed of 8 subunits; MtrA, MtrB, MtrC, MtrD,
CC       MtrE, MtrF, MtrG and MtrH. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the MtrC family. {ECO:0000305}.
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DR   EMBL; AE000666; AAB85650.1; -; Genomic_DNA.
DR   PIR; G69021; G69021.
DR   RefSeq; WP_010876785.1; NC_000916.1.
DR   AlphaFoldDB; O27229; -.
DR   IntAct; O27229; 6.
DR   STRING; 187420.MTH_1161; -.
DR   EnsemblBacteria; AAB85650; AAB85650; MTH_1161.
DR   GeneID; 1471569; -.
DR   KEGG; mth:MTH_1161; -.
DR   PATRIC; fig|187420.15.peg.1138; -.
DR   HOGENOM; CLU_092286_0_0_2; -.
DR   OMA; HPFNACL; -.
DR   UniPathway; UPA00640; UER00698.
DR   Proteomes; UP000005223; Chromosome.
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: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_01096; MtrC; 1.
DR   InterPro; IPR005865; THM_MeTrfase_su_C.
DR   Pfam; PF04211; MtrC; 1.
DR   PIRSF; PIRSF006530; MtrC; 1.
DR   TIGRFAMs; TIGR01148; mtrC; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; Methanogenesis; Methyltransferase;
KW   One-carbon metabolism; Reference proteome; Transferase; Transmembrane;
KW   Transmembrane helix.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..267
FT                   /note="Tetrahydromethanopterin S-methyltransferase subunit
FT                   C"
FT                   /id="PRO_0000147526"
FT   TRANSMEM        18..38
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        39..59
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        76..96
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        99..119
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        138..158
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        163..183
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        209..229
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        230..250
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   267 AA;  26974 MW;  14B459B4A94CFA17 CRC64;
     MSVAAGGPAG AAIPESRLMA LGIIGGLGGI YASTVNPVIG PVFASLGAVC AIIWGADAIR
     RVASYGLGTG VPSIGYMSVS IGIVGVVAGL ASVFTLPALA APVVGLILAM ILGVVVAVLG
     KKIVKMKIPI LEKCTAEISG AAALSVLGFS AAIAGSYTMQ AVLTSVIATG FIGLLFILNT
     MAIQHPFNAC LGPNENQTRT LKLAASTGFI SMAIAGLLGI GLNPGWWLVS LVGALCWVVA
     FKSFVSASFE EAASVKWSGL WPKEEEQ