Reviewed, UniProtKB/Swiss-Prot B2FPP2 (MTNC_STRMK)

Names and origin

Protein names

Recommended name:
    Enolase-phosphatase E1
    EC=3.1.3.77
Alternative name(s):
    2,3-diketo-5-methylthio-1-phosphopentane phosphatase

Gene names

Name:	mtnC
Ordered Locus Names:	Smlt2187

Organism

Stenotrophomonas maltophilia (strain K279a) [Complete proteome] [HAMAP]

Taxonomic identifier

522373 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Xanthomonadales › Xanthomonadaceae › Stenotrophomonas

Protein attributes

Sequence length	231 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Bifunctional enzyme that catalyzes the enolization of 2,3-diketo-5-methylthiopentyl-1-phosphate (DK-MTP-1-P) into the intermediate 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate (HK-MTPenyl-1-P), which is then dephosphorylated to form the acireductone 1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene) By similarity.
Catalytic activity	5-(methylthio)-2,3-dioxopentyl phosphate + H2O = 1,2-dihydroxy-5-(methylthio)pent-1-en-3-one + phosphate. HAMAP MF_01681
Cofactor	Binds 1 magnesium ion per subunit By similarity.
Pathway	Amino-acid biosynthesis; L-methionine biosynthesis via salvage pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate: step 3/6. HAMAP MF_01681 Amino-acid biosynthesis; L-methionine biosynthesis via salvage pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate: step 4/6.
Subunit structure	Monomer By similarity.
Sequence similarities	Belongs to the HAD-like hydrolase superfamily. MasA/mtnC family.

Ontologies

Keywords
Biological process	Amino-acid biosynthesis Methionine biosynthesis
Ligand	Magnesium Metal-binding
Molecular function	Hydrolase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	methionine biosynthetic process from S-adenosylmethionine Inferred from electronic annotation. Source: HAMAP methionine salvage Inferred from electronic annotation. Source: InterPro
Molecular function	2,3-diketo-5-methylthiopentyl-1-phosphate enolase activity Inferred from electronic annotation. Source: HAMAP 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase activity Inferred from electronic annotation. Source: HAMAP acireductone synthase activity Inferred from electronic annotation. Source: EC magnesium ion binding Inferred from electronic annotation. Source: HAMAP phosphoglycolate phosphatase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 231	231	Enolase-phosphatase E1 HAMAP MF_01681		PRO_0000357414

Sequences

	Sequence		Length	Mass (Da)
	B2FPP2-1 [UniParc]. Last modified June 10, 2008. Version 1. Checksum: E01F95055149F09B	FASTA	231	25,588
	10 20 30 40 50 60 MQPRVILTDI EGTTSSISFV KNVLFPYARK ALPAFVAEHG QQPEVRRWLD AVATEIGGAC 70 80 90 100 110 120 QDSLVAETLQ GWIDQDRKHT ALKALQGLIW DEGYRRGDYT AHFYPEVAPV LKGWHAAGLP 130 140 150 160 170 180 LYVYSSGSVP AQKLFFGFSD AGDLSPLVSG WFDTEIGGKR EADSYRRIVQ AIGVPAGEIV 190 200 210 220 230 FLSDVVEELD AAREAGLQTR LIDRLDDYPM PRIGQAANGH ERVENFQQIQ L

References

[1]

"The complete genome, comparative and functional analysis of Stenotrophomonas maltophilia reveals an organism heavily shielded by drug resistance determinants." Crossman L.C., Gould V.C., Dow J.M., Vernikos G.S., Okazaki A., Sebaihia M., Saunders D., Arrowsmith C., Carver T., Peters N., Adlem E., Kerhornou A., Lord A., Murphy L., Seeger K., Squares R., Rutter S., Quail M.A. , Rajandream M.A., Harris D., Churcher C., Bentley S.D., Parkhill J., Thomson N.R., Avison M.B. Genome Biol. 9:RESEARCH074.1-RESEARCH074.13(2008) [PubMed: 18419807] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	AM743169 Genomic DNA. Translation: CAQ45685.1.
RefSeq	YP_001971986.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	6394471.
GenomeReviews	Gene locus Smlt2187 in contig AM743169_GR.
KEGG	sml:Smlt2187.
Organism-specific databases
CMR	Search...
Phylogenomic databases
OMA	TTDLNFI.
Family and domain databases
HAMAP	MF_01681. [Tree]
InterPro	IPR005834. Dehalogen-like_hydro. IPR010041. Enolase_ppase. IPR006439. HAD-SF_hydro_IA_v1. [Graphical view]
PANTHER	PTHR20371. Enolase_ppase. 1 hit.
Pfam	PF00702. Hydrolase. 1 hit. [Graphical view]
TIGRFAMs	TIGR01691. enolase-ppase. 1 hit. TIGR01549. HAD-SF-IA-v1. 1 hit.
ProtoNet	Search...

Entry information

Entry name

MTNC_STRMK

Accession

Primary (citable) accession number: B2FPP2

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 16, 2008
Last sequence update:	June 10, 2008
Last modified:	November 3, 2009
This is version 12 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)