Reviewed, UniProtKB/Swiss-Prot B1XPT1 (MTNC_SYNP2)

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:	SYNPCC7002_A0552

Organism

Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum quadruplicatum) [Complete proteome] [HAMAP]

Taxonomic identifier

32049 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Chroococcales › Synechococcus

Protein attributes

Sequence length	228 AA.
Sequence status	Complete.
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. HAMAP MF_01681
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. HAMAP MF_01681
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. HAMAP MF_01681
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	L-methionine biosynthetic process from S-adenosylmethionine Inferred from electronic annotation. Source: HAMAP L-methionine salvage from methylthioadenosine 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 – 228	228	Enolase-phosphatase E1 HAMAP MF_01681		PRO_0000357420

Sequences

	Sequence		Length	Mass (Da)
	B1XPT1-1 [UniParc]. Last modified May 20, 2008. Version 1. Checksum: 3D07289441EE3ED5	FASTA	228	25,394
	10 20 30 40 50 60 MIQFVLMDIE GTTTSVSFVF DVLFPYFRDN IQSIASRAEE PEIAAILKQV QDLALTETGT 70 80 90 100 110 120 SLDQTGAIAT LHQWSVEDRK VAPLKAMQGF LWEEGYKNGD FRGHVYPDVL PKLKEWQKEG 130 140 150 160 170 180 IQLGIYSSGS VKAQKLLFGY SDYGDLTGYF DYFFDLKVGQ KRDVQSYQAI AQAVQLPPEA 190 200 210 220 ILFLSDVPAE LDAAIQAGYQ AWQLVRPGTT ASPTHQQVTD FGAITSLH

References

[1]

"Complete sequence of Synechococcus sp. PCC 7002." Li T., Zhao J., Zhao C., Liu Z., Zhao F., Marquardt J., Nomura C.T., Persson S., Detter J.C., Richardson P.M., Lanz C., Schuster S.C., Wang J., Li S., Huang X., Cai T., Yu Z., Luo J., Zhao J., Bryant D.A. Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000951 Genomic DNA. Translation: ACA98559.1.
RefSeq	YP_001733815.1.
3D structure databases
SMR	B1XPT1. Positions 2-227.
ModBase	Search...
Genome annotation databases
GeneID	6055744.
GenomeReviews	Gene locus SYNPCC7002_A0552 in contig CP000951_GR.
KEGG	syp:SYNPCC7002_A0552.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG294242.
OMA	TTDLNFI.
Family and domain databases
HAMAP	MF_01681. Salvage_MtnC. [Tree]
InterPro	IPR005834. Dehalogen-like_hydro. IPR010041. Enolase_ppase. IPR006439. HAD-SF_hydro_IA_v1. IPR005833. Haloacid_DH/epoxide_hydro. [Graphical view]
PANTHER	PTHR20371. Enolase_ppase. 1 hit.
Pfam	PF00702. Hydrolase. 1 hit. [Graphical view]
PRINTS	PR00413. HADHALOGNASE.
TIGRFAMs	TIGR01691. enolase-ppase. 1 hit. TIGR01549. HAD-SF-IA-v1. 1 hit.
ProtoNet	Search...

Entry information

Entry name

MTNC_SYNP2

Accession

Primary (citable) accession number: B1XPT1

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 16, 2008
Last sequence update:	May 20, 2008
Last modified:	February 9, 2010
This is version 14 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)