ID   MTNC_SYNPW              Reviewed;         242 AA.
AC   A5GJ48;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-JUN-2007, sequence version 1.
DT   25-MAY-2022, entry version 87.
DE   RecName: Full=Enolase-phosphatase E1 {ECO:0000255|HAMAP-Rule:MF_01681};
DE            EC=3.1.3.77 {ECO:0000255|HAMAP-Rule:MF_01681};
DE   AltName: Full=2,3-diketo-5-methylthio-1-phosphopentane phosphatase {ECO:0000255|HAMAP-Rule:MF_01681};
GN   Name=mtnC {ECO:0000255|HAMAP-Rule:MF_01681};
GN   OrderedLocusNames=SynWH7803_0537;
OS   Synechococcus sp. (strain WH7803).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32051;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WH7803;
RG   Genoscope;
RL   Submitted (MAY-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Bifunctional enzyme that catalyzes the enolization of 2,3-
CC       diketo-5-methylthiopentyl-1-phosphate (DK-MTP-1-P) into the
CC       intermediate 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate (HK-
CC       MTPenyl-1-P), which is then dephosphorylated to form the acireductone
CC       1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene).
CC       {ECO:0000255|HAMAP-Rule:MF_01681}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-methylsulfanyl-2,3-dioxopentyl phosphate + H2O = 1,2-
CC         dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + phosphate;
CC         Xref=Rhea:RHEA:21700, ChEBI:CHEBI:15377, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:49252, ChEBI:CHEBI:58828; EC=3.1.3.77;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01681};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01681};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01681};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC       pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate:
CC       step 3/6. {ECO:0000255|HAMAP-Rule:MF_01681}.
CC   -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC       pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate:
CC       step 4/6. {ECO:0000255|HAMAP-Rule:MF_01681}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_01681}.
CC   -!- SIMILARITY: Belongs to the HAD-like hydrolase superfamily. MasA/MtnC
CC       family. {ECO:0000255|HAMAP-Rule:MF_01681}.
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DR   EMBL; CT971583; CAK22963.1; -; Genomic_DNA.
DR   RefSeq; WP_011932449.1; NC_009481.1.
DR   AlphaFoldDB; A5GJ48; -.
DR   SMR; A5GJ48; -.
DR   STRING; 32051.SynWH7803_0537; -.
DR   EnsemblBacteria; CAK22963; CAK22963; SynWH7803_0537.
DR   KEGG; syx:SynWH7803_0537; -.
DR   eggNOG; COG4229; Bacteria.
DR   HOGENOM; CLU_023273_0_0_3; -.
DR   OMA; QLKGHVY; -.
DR   OrthoDB; 1204073at2; -.
DR   UniPathway; UPA00904; UER00876.
DR   UniPathway; UPA00904; UER00877.
DR   Proteomes; UP000001566; Chromosome.
DR   GO; GO:0043715; F:2,3-diketo-5-methylthiopentyl-1-phosphate enolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043716; F:2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043874; F:acireductone synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019509; P:L-methionine salvage from methylthioadenosine; IEA:UniProtKB-UniPathway.
DR   GO; GO:0019284; P:L-methionine salvage from S-adenosylmethionine; IEA:UniProtKB-UniRule.
DR   CDD; cd01629; HAD_EP; 1.
DR   Gene3D; 3.40.50.1000; -; 1.
DR   HAMAP; MF_01681; Salvage_MtnC; 1.
DR   InterPro; IPR023943; Enolase-ppase_E1.
DR   InterPro; IPR036412; HAD-like_sf.
DR   InterPro; IPR023214; HAD_sf.
DR   SFLD; SFLDF00044; enolase-phosphatase; 1.
DR   SUPFAM; SSF56784; SSF56784; 1.
DR   TIGRFAMs; TIGR01691; enolase-ppase; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Hydrolase; Magnesium; Metal-binding;
KW   Methionine biosynthesis; Reference proteome.
FT   CHAIN           1..242
FT                   /note="Enolase-phosphatase E1"
FT                   /id="PRO_0000357424"
SQ   SEQUENCE   242 AA;  26814 MW;  EA9831B9AC383E72 CRC64;
     MIKAIVLDIE GTTCPVTFVS QTLFPFARRQ LSKTICSENR PSNVTAAIEE AIAEWKNDPE
     SKSQALLLRA SNQNQPTSED IIHYFDHLIQ NDRKSTALKE LQGIIWEQGY AAGELQSPLY
     GDVVPALNAW TQQGITLAVY SSGSVKAQQL LYAHTTDGDI TNRFSQWFDT RTGPKLNADS
     YRIISQSIGL KPASILFVSD HPRECDAAAE AGMETRFCLR EGNPFSDGGD HQMIHNLGEI
     KL