Q5N078 (MTNC_SYNP6) Reviewed, UniProtKB/Swiss-Prot

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:	syc2102_c

Organism

Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis nidulans) [Complete proteome] [HAMAP]

Taxonomic identifier

269084 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Chroococcales › Synechococcus

Protein attributes

Sequence length	238 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 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: InterPro 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase activity Inferred from electronic annotation. Source: InterPro acireductone synthase activity Inferred from electronic annotation. Source: EC magnesium ion binding Inferred from electronic annotation. Source: InterPro 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 – 238	238	Enolase-phosphatase E1 HAMAP MF_01681		PRO_0000357419

Sequences

	Sequence		Length	Mass (Da)
	Q5N078 [UniParc]. Last modified February 1, 2005. Version 1. Checksum: 7510F066FDDCEA19	FASTA	238	25,681
	10 20 30 40 50 60 MPLPVSITTL LLDIEGTTTP VDFVFKVLFP YARDRVADFL ATQGADPEVQ ADLDLLRQEY 70 80 90 100 110 120 AQEAAAELPD WAGEDAIAAV PYIQWLIDSD RKSTGLKSLQ GKIWEQGYVS GEIKGQLFAD 130 140 150 160 170 180 VLPAFQRWQA AGLAIAIFSS GSVQAQQLLF GYSEAGDLSP HLSGYFDTRT GPKREAASYG 190 200 210 220 230 AIAAQLGKAP AQVLFVSDIP AELEAAATAG FQTRLSLRPG NATVEIGDWT TIHSFDEL

References

[1]

"Complete nucleotide sequence of the freshwater unicellular cyanobacterium Synechococcus elongatus PCC 6301 chromosome: gene content and organization." Sugita C., Ogata K., Shikata M., Jikuya H., Takano J., Furumichi M., Kanehisa M., Omata T., Sugiura M., Sugita M. Photosyn. Res. 93:55-67(2007) [PubMed: 17211581] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 27144 / PCC 6301 / SAUG 1402/1.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AP008231 Genomic DNA. Translation: BAD80292.1.
RefSeq	YP_172812.1. NC_006576.1.
3D structure databases
HSSP	HSSP built from PDB template 2G80 based on UniProtKB P32626.
ProteinModelPortal	Q5N078.
ModBase	Search...
Protein-protein interaction databases
STRING	Q5N078.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3198178.
GenomeReviews	Gene locus syc2102_c in contig AP008231_GR.
KEGG	syc:syc2102_c.
PATRIC	32490325. VBISynElo117686_2394.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG4229.
HOGENOM	HBG294242.
OMA	TTDLNFI.
PhylomeDB	Q5N078.
ProtClustDB	CLSK866737.
Enzyme and pathway databases
BioCyc	SELO269084:SYC2102_C-MONOMER.
Family and domain databases
HAMAP	MF_01681. Salvage_MtnC. [Tree]
InterPro	IPR005834. Dehalogen-like_hydro. IPR023943. Enolase-phosphatase_E1. IPR010041. Enolase_ppase. IPR023214. HAD-like_dom. IPR006439. HAD-SF_hydro_IA_v1. [Graphical view]
Gene3D	G3DSA:3.40.50.1000. HAD-like_dom. 1 hit.
KO	K09880.
Pfam	PF00702. Hydrolase. 1 hit. [Graphical view]
SUPFAM	SSF56784. HAD-like_dom. 1 hit.
TIGRFAMs	TIGR01691. Enolase-ppase. 1 hit. TIGR01549. HAD-SF-IA-v1. 1 hit.
ProtoNet	Search...

Entry information

Entry name

MTNC_SYNP6

Accession

Primary (citable) accession number: Q5N078

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 16, 2008
Last sequence update:	February 1, 2005
Last modified:	January 25, 2012
This is version 50 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program