Q58263 (MTRG_METJA) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Tetrahydromethanopterin S-methyltransferase subunit G
EC=2.1.1.86

Alternative name(s):
N5-methyltetrahydromethanopterin--coenzyme M methyltransferase subunit G

Gene names

Name:	mtrG
Ordered Locus Names:	MJ0853

Organism

Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii)

Taxonomic identifier

243232 [NCBI]

Taxonomic lineage

Archaea › Euryarchaeota › Methanococci › Methanococcales › Methanocaldococcaceae › Methanocaldococcus

Protein attributes

Sequence length	84 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Part of a complex that catalyzes the formation of methyl-coenzyme M and tetrahydromethanopterin from coenzyme M and methyl-tetrahydromethanopterin. This is an energy-conserving, sodium-ion translocating step By similarity. HAMAP MF_01500
Catalytic activity	5-methyl-5,6,7,8-tetrahydromethanopterin + 2-mercaptoethanesulfonate = 5,6,7,8-tetrahydromethanopterin + 2-(methylthio)ethanesulfonate. HAMAP MF_01500
Pathway	One-carbon metabolism; methanogenesis from CO(2); methyl-coenzyme M from 5,10-methylene-5,6,7,8-tetrahydromethanopterin: step 2/2. HAMAP MF_01500
Subunit structure	The complex is composed of 8 subunits; mtrA, mtrB, mtrC, mtrD, mtrE, mtrF, mtrG and mtrH By similarity.
Subcellular location	Cell membrane; Single-pass membrane protein Potential HAMAP MF_01500.
Sequence similarities	Belongs to the mtrG family.

Ontologies

Keywords
Biological process	Methanogenesis One-carbon metabolism
Cellular component	Cell membrane Membrane
Domain	Transmembrane Transmembrane helix
Molecular function	Methyltransferase Transferase
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	methanogenesis Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW plasma membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	tetrahydromethanopterin S-methyltransferase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 84	84	Tetrahydromethanopterin S-methyltransferase subunit G HAMAP MF_01500		PRO_0000147555
Regions
	Transmembrane	50 – 70	21	Helical; Potential

Sequences

	Sequence		Length	Mass (Da)
	Q58263 [UniParc]. Last modified November 1, 1997. Version 1. Checksum: 4802F872BAD32A2E	FASTA	84	9,449
	10 20 30 40 50 60 MSEDEKLPQV IMDPADYEAL KKRLDELEKK VENTNAELFQ LAGKKVGRDI GILYGLVIGI 70 80 ILSYILPALI KIIQILSLKV LVQQ

References

[1]

"Complete genome sequence of the methanogenic archaeon, Methanococcus jannaschii." Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D., Sutton G.G., Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D., Kerlavage A.R., Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I., Overbeek R., Kirkness E.F., Weinstock K.G. , Merrick J.M., Glodek A., Scott J.L., Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D., Utterback T.R., Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C., Cotton M.D., Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M., Klenk H.-P., Fraser C.M., Smith H.O., Woese C.R., Venter J.C. Science 273:1058-1073(1996) [PubMed: 8688087] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440.

Cross-references

Sequence databases
EMBL GenBank DDBJ	L77117 Genomic DNA. Translation: AAB98858.1.
PIR	E64406.
RefSeq	NP_247847.1. NC_000909.1.
3D structure databases
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1451741.
GenomeReviews	Gene locus MJ0853 in contig L77117_GR.
KEGG	mja:MJ_0853.
NMPDR	fig|243232.1.peg.884.
TIGR	MJ0853.
Phylogenomic databases
HOGENOM	HBG555029.
OMA	IMDPADY.
ProtClustDB	PRK01026.
Enzyme and pathway databases
BioCyc	MJAN243232:MJ_0853-MONOMER.
Family and domain databases
HAMAP	MF_01500. MtrG. [Tree]
InterPro	IPR005866. THM_MeTrfase_su_G. [Graphical view]
KO	K00583.
Pfam	PF04210. MtrG. 1 hit. [Graphical view]
PIRSF	PIRSF006500. MtrG. 1 hit.
ProDom	PD012265. THM_MeTrfase_su_G. 1 hit. [Graphical view] [Entries sharing at least one domain]
TIGRFAMs	TIGR01149. MtrG. 1 hit.
ProtoNet	Search...

Entry information

Entry name

MTRG_METJA

Accession

Primary (citable) accession number: Q58263

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	November 1, 1997
Last modified:	November 16, 2011
This is version 76 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program