ID   MTNB_YEAS6              Reviewed;         244 AA.
AC   B5VLI6;
DT   20-APR-2010, integrated into UniProtKB/Swiss-Prot.
DT   25-NOV-2008, sequence version 1.
DT   03-AUG-2022, entry version 46.
DE   RecName: Full=Methylthioribulose-1-phosphate dehydratase {ECO:0000255|HAMAP-Rule:MF_03116};
DE            Short=MTRu-1-P dehydratase {ECO:0000255|HAMAP-Rule:MF_03116};
DE            EC=4.2.1.109 {ECO:0000255|HAMAP-Rule:MF_03116};
GN   Name=MDE1 {ECO:0000255|HAMAP-Rule:MF_03116}; ORFNames=AWRI1631_102220;
OS   Saccharomyces cerevisiae (strain AWRI1631) (Baker's yeast).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Saccharomyces.
OX   NCBI_TaxID=545124;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AWRI1631;
RX   PubMed=18778279; DOI=10.1111/j.1567-1364.2008.00434.x;
RA   Borneman A.R., Forgan A.H., Pretorius I.S., Chambers P.J.;
RT   "Comparative genome analysis of a Saccharomyces cerevisiae wine strain.";
RL   FEMS Yeast Res. 8:1185-1195(2008).
CC   -!- FUNCTION: Catalyzes the dehydration of methylthioribulose-1-phosphate
CC       (MTRu-1-P) into 2,3-diketo-5-methylthiopentyl-1-phosphate (DK-MTP-1-P).
CC       {ECO:0000255|HAMAP-Rule:MF_03116}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=S-methyl-5-thio-D-ribulose 1-phosphate = 5-methylsulfanyl-2,3-
CC         dioxopentyl phosphate + H2O; Xref=Rhea:RHEA:15549, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:58548, ChEBI:CHEBI:58828; EC=4.2.1.109;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03116};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03116};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_03116};
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 2/6. {ECO:0000255|HAMAP-Rule:MF_03116}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03116}.
CC   -!- SIMILARITY: Belongs to the aldolase class II family. MtnB subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_03116}.
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DR   EMBL; ABSV01001350; EDZ71209.1; -; Genomic_DNA.
DR   AlphaFoldDB; B5VLI6; -.
DR   SMR; B5VLI6; -.
DR   UniPathway; UPA00904; UER00875.
DR   Proteomes; UP000008988; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0046570; F:methylthioribulose 1-phosphate dehydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc 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   Gene3D; 3.40.225.10; -; 1.
DR   HAMAP; MF_03116; Salvage_MtnB_euk; 1.
DR   InterPro; IPR001303; Aldolase_II/adducin_N.
DR   InterPro; IPR036409; Aldolase_II/adducin_N_sf.
DR   InterPro; IPR017714; MethylthioRu-1-P_deHdtase_MtnB.
DR   InterPro; IPR027514; Salvage_MtnB_euk.
DR   PANTHER; PTHR10640; PTHR10640; 1.
DR   Pfam; PF00596; Aldolase_II; 1.
DR   SMART; SM01007; Aldolase_II; 1.
DR   SUPFAM; SSF53639; SSF53639; 1.
DR   TIGRFAMs; TIGR03328; salvage_mtnB; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Lyase; Metal-binding;
KW   Methionine biosynthesis; Zinc.
FT   CHAIN           1..244
FT                   /note="Methylthioribulose-1-phosphate dehydratase"
FT                   /id="PRO_0000393845"
FT   ACT_SITE        130
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         89
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         107
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         109
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         192
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
SQ   SEQUENCE   244 AA;  27402 MW;  F8242D61D06C71AD CRC64;
     MSSQDVLIHS DDPCHPANLI CTLCKQFFHN NWCTGTGGGI SIKDPNTNYY YLAPSGVQKE
     KMTPEDLFVM DAQTLEYLRS PKLYKPSACT PLFLACYQKK DAGAIIHTHS QNAVICSLVF
     GDEFRIANIE QIKAIPSGKV DPVTKKPMAL SFFDTLKIPI IENMAHEDEL IDDLHKTFKD
     YPDTCAVIVR RHGIFVWGPT IDKAKIFNEA IDYLMELAIK MYQMGIPPDC GIGEEKKHLK
     MASP