ID   MTNB_AJECH              Reviewed;         240 AA.
AC   C6H2R1;
DT   20-APR-2010, integrated into UniProtKB/Swiss-Prot.
DT   01-SEP-2009, sequence version 1.
DT   03-AUG-2022, entry version 53.
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=HCDG_00993;
OS   Ajellomyces capsulatus (strain H143) (Darling's disease fungus)
OS   (Histoplasma capsulatum).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Onygenales; Ajellomycetaceae; Histoplasma.
OX   NCBI_TaxID=544712;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=H143;
RA   Champion M., Cuomo C.A., Ma L.-J., Henn M.R., Sil A., Goldman B.,
RA   Young S.K., Kodira C.D., Zeng Q., Koehrsen M., Alvarado L., Berlin A.M.,
RA   Borenstein D., Chen Z., Engels R., Freedman E., Gellesch M., Goldberg J.,
RA   Griggs A., Gujja S., Heiman D.I., Hepburn T.A., Howarth C., Jen D.,
RA   Larson L., Lewis B., Mehta T., Park D., Pearson M., Roberts A., Saif S.,
RA   Shea T.D., Shenoy N., Sisk P., Stolte C., Sykes S., Walk T., White J.,
RA   Yandava C., Klein B., McEwen J.G., Puccia R., Goldman G.H., Felipe M.S.,
RA   Nino-Vega G., San-Blas G., Taylor J.W., Mendoza L., Galagan J.E.,
RA   Nusbaum C., Birren B.W.;
RT   "The genome sequence of Ajellomyces capsulatus strain H143.";
RL   Submitted (MAY-2009) to the EMBL/GenBank/DDBJ databases.
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; GG692419; EER45414.1; -; Genomic_DNA.
DR   AlphaFoldDB; C6H2R1; -.
DR   SMR; C6H2R1; -.
DR   STRING; 544712.C6H2R1; -.
DR   EnsemblFungi; EER45414; EER45414; HCDG_00993.
DR   VEuPathDB; FungiDB:HCDG_00993; -.
DR   eggNOG; KOG2631; Eukaryota.
DR   HOGENOM; CLU_006033_4_0_1; -.
DR   OMA; IRGHGLY; -.
DR   UniPathway; UPA00904; UER00875.
DR   Proteomes; UP000002624; 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; Reference proteome; Zinc.
FT   CHAIN           1..240
FT                   /note="Methylthioribulose-1-phosphate dehydratase"
FT                   /id="PRO_0000393800"
FT   ACT_SITE        145
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         99
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         116
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         118
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         201
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
SQ   SEQUENCE   240 AA;  26849 MW;  DE71758A667A307B CRC64;
     MAAIKDENND HLVQSDNPEH PSNLIPALCR NFYSHGWVTG TGGGASIKRD NHIFIAPSGV
     QKELIQPHDI FVLQYPTPKY PPSARQYIRK PLELKPSACT PLFLAAFDRG AGCCIHTHSQ
     WAVLVTLLVE REKGPEGCFE ISNIEQIKGI PRGKGKGMLG FFDTLKIPII ENTAFEEDLT
     SSLEEAMEKY PDTYAVLVRR HGIYVWGDDV AKAKTQCESL DYLFQLAVEM HKLGLPWVKS