ID   MTD_METB6               Reviewed;         279 AA.
AC   A7I5N7;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   11-SEP-2007, sequence version 1.
DT   25-MAY-2022, entry version 70.
DE   RecName: Full=F420-dependent methylenetetrahydromethanopterin dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00058};
DE            Short=MTD {ECO:0000255|HAMAP-Rule:MF_00058};
DE            EC=1.5.98.1 {ECO:0000255|HAMAP-Rule:MF_00058};
DE   AltName: Full=Coenzyme F420-dependent N5,N10-methylenetetrahydromethanopterin dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00058};
GN   Name=mtd {ECO:0000255|HAMAP-Rule:MF_00058}; OrderedLocusNames=Mboo_0530;
OS   Methanoregula boonei (strain DSM 21154 / JCM 14090 / 6A8).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanomicrobiales; Methanoregulaceae; Methanoregula.
OX   NCBI_TaxID=456442;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 21154 / JCM 14090 / 6A8;
RX   PubMed=25998264; DOI=10.1099/mic.0.000117;
RA   Braeuer S., Cadillo-Quiroz H., Kyrpides N., Woyke T., Goodwin L.,
RA   Detter C., Podell S., Yavitt J.B., Zinder S.H.;
RT   "Genome of Methanoregula boonei 6A8 reveals adaptations to oligotrophic
RT   peatland environments.";
RL   Microbiology 161:1572-1581(2015).
CC   -!- FUNCTION: Catalyzes the reversible reduction of methenyl-H(4)MPT(+) to
CC       methylene-H(4)MPT. {ECO:0000255|HAMAP-Rule:MF_00058}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5,10-methylenetetrahydromethanopterin + 2 H(+) + oxidized
CC         coenzyme F420-(gamma-L-Glu)(n) = 5,10-methenyl-5,6,7,8-
CC         tetrahydromethanopterin + reduced coenzyme F420-(gamma-L-Glu)(n);
CC         Xref=Rhea:RHEA:16721, Rhea:RHEA-COMP:12939, Rhea:RHEA-COMP:14378,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57818, ChEBI:CHEBI:58337,
CC         ChEBI:CHEBI:133980, ChEBI:CHEBI:139511; EC=1.5.98.1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00058};
CC   -!- PATHWAY: One-carbon metabolism; methanogenesis from CO(2); 5,10-
CC       methylene-5,6,7,8-tetrahydromethanopterin from 5,10-methenyl-5,6,7,8-
CC       tetrahydromethanopterin (coenzyme F420 route): step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00058}.
CC   -!- SIMILARITY: Belongs to the MTD family. {ECO:0000255|HAMAP-
CC       Rule:MF_00058}.
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DR   EMBL; CP000780; ABS55048.1; -; Genomic_DNA.
DR   RefSeq; WP_012106069.1; NC_009712.1.
DR   AlphaFoldDB; A7I5N7; -.
DR   SMR; A7I5N7; -.
DR   STRING; 456442.Mboo_0530; -.
DR   EnsemblBacteria; ABS55048; ABS55048; Mboo_0530.
DR   GeneID; 5411757; -.
DR   KEGG; mbn:Mboo_0530; -.
DR   eggNOG; arCOG04382; Archaea.
DR   HOGENOM; CLU_1006890_0_0_2; -.
DR   OMA; KGCFMTK; -.
DR   OrthoDB; 46875at2157; -.
DR   UniPathway; UPA00640; UER00695.
DR   Proteomes; UP000002408; Chromosome.
DR   GO; GO:0008901; F:ferredoxin hydrogenase activity; IEA:InterPro.
DR   GO; GO:0030268; F:methylenetetrahydromethanopterin dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019386; P:methanogenesis, from carbon dioxide; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00058; MTD; 1.
DR   InterPro; IPR002844; MTD.
DR   InterPro; IPR036080; MTD_sf.
DR   Pfam; PF01993; MTD; 1.
DR   SUPFAM; SSF102324; SSF102324; 1.
PE   3: Inferred from homology;
KW   Methanogenesis; One-carbon metabolism; Oxidoreductase; Reference proteome.
FT   CHAIN           1..279
FT                   /note="F420-dependent methylenetetrahydromethanopterin
FT                   dehydrogenase"
FT                   /id="PRO_1000117809"
SQ   SEQUENCE   279 AA;  30525 MW;  3AD95D795937EB70 CRC64;
     MVVKVGVAKL GNIASGVMAE LLLDERADRE DMQTFMATSG TKLQPEDIDR VVSNMKAWKP
     DFAIVVSPNG VLPGPTGARE QLAAAGIPVI IITDDVTTKK EWEEVKNSKF GYIIMKADSM
     IGARREFLDP IEMADFNGNL VKVLAITGAF RKLQLALDKV IDQVKAGKKG TEIELPKIVM
     TTDKAVDGEF TNDYALAKAR AAHEIAIAVA GQNVKGCFMT KEWEKYIPIV ASAHEMMRIA
     AVLCDEAREI EKAGDGILRQ PHKKDGVLVR KTKLVAKFE