MTNB_DROSI
ID MTNB_DROSI Reviewed; 227 AA.
AC B4R4E9;
DT 20-APR-2010, integrated into UniProtKB/Swiss-Prot.
DT 23-SEP-2008, sequence version 1.
DT 03-AUG-2022, entry version 68.
DE RecName: Full=Probable 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 ORFNames=GD17142;
OS Drosophila simulans (Fruit fly).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC Neoptera; Endopterygota; Diptera; Brachycera; Muscomorpha; Ephydroidea;
OC Drosophilidae; Drosophila; Sophophora.
OX NCBI_TaxID=7240;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=17994087; DOI=10.1038/nature06341;
RG Drosophila 12 genomes consortium;
RT "Evolution of genes and genomes on the Drosophila phylogeny.";
RL Nature 450:203-218(2007).
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; CM000366; EDX17851.1; -; Genomic_DNA.
DR RefSeq; XP_002106882.1; XM_002106846.2.
DR AlphaFoldDB; B4R4E9; -.
DR SMR; B4R4E9; -.
DR STRING; 7240.B4R4E9; -.
DR EnsemblMetazoa; FBtr0217052; FBpp0215544; FBgn0188711.
DR GeneID; 6725887; -.
DR HOGENOM; CLU_006033_4_0_1; -.
DR OMA; IRGHGLY; -.
DR PhylomeDB; B4R4E9; -.
DR UniPathway; UPA00904; UER00875.
DR Proteomes; UP000000304; Chromosome x.
DR Bgee; FBgn0188711; Expressed in embryo and 3 other tissues.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0046570; F:methylthioribulose 1-phosphate dehydratase activity; ISS:UniProtKB.
DR GO; GO:0008270; F:zinc ion binding; ISS:UniProtKB.
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..227
FT /note="Probable methylthioribulose-1-phosphate dehydratase"
FT /id="PRO_0000393788"
FT ACT_SITE 129
FT /note="Proton donor/acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT BINDING 87
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT BINDING 105
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
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 185
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
SQ SEQUENCE 227 AA; 26011 MW; 7F2E505906CE155D CRC64;
MALSIFKDLP AEHPRHLIPS LCRQFYHLGW VTGTGGGMSI KYNDEIYIAP SGVQKERMQP
EDLFVQDITG KDLQLPPEIK GLKKSQCTPL FMLAYQHRQA GAVIHTHSQH AVMATLLWPG
KTFRCTHLEM IKGVYDEADK RYLRYDEELV VPIIENTPFE RDLADSMYAA MMEYPGCSAI
LVRRHGVYVW GQNWEKAKTM SECYDYLFSI AVEMKKAGID PEKFESS
