ID   MTNB_NEMVE              Reviewed;         271 AA.
AC   A7RH72;
DT   20-APR-2010, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 70.
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=v1g197093;
OS   Nematostella vectensis (Starlet sea anemone).
OC   Eukaryota; Metazoa; Cnidaria; Anthozoa; Hexacorallia; Actiniaria;
OC   Edwardsiidae; Nematostella.
OX   NCBI_TaxID=45351;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CH2 X CH6;
RX   PubMed=17615350; DOI=10.1126/science.1139158;
RA   Putnam N.H., Srivastava M., Hellsten U., Dirks B., Chapman J., Salamov A.,
RA   Terry A., Shapiro H., Lindquist E., Kapitonov V.V., Jurka J.,
RA   Genikhovich G., Grigoriev I.V., Lucas S.M., Steele R.E., Finnerty J.R.,
RA   Technau U., Martindale M.Q., Rokhsar D.S.;
RT   "Sea anemone genome reveals ancestral eumetazoan gene repertoire and
RT   genomic organization.";
RL   Science 317:86-94(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; DS469510; EDO49170.1; -; Genomic_DNA.
DR   RefSeq; XP_001641233.1; XM_001641183.1.
DR   AlphaFoldDB; A7RH72; -.
DR   SMR; A7RH72; -.
DR   STRING; 45351.EDO49170; -.
DR   EnsemblMetazoa; EDO49170; EDO49170; NEMVEDRAFT_v1g197093.
DR   eggNOG; KOG2631; Eukaryota.
DR   HOGENOM; CLU_006033_4_0_1; -.
DR   InParanoid; A7RH72; -.
DR   OMA; IRGHGLY; -.
DR   OrthoDB; 1062330at2759; -.
DR   PhylomeDB; A7RH72; -.
DR   UniPathway; UPA00904; UER00875.
DR   Proteomes; UP000001593; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
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; IBA:GO_Central.
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..271
FT                   /note="Probable methylthioribulose-1-phosphate dehydratase"
FT                   /id="PRO_0000393792"
FT   BINDING         119
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         137
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         139
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
FT   BINDING         218
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03116"
SQ   SEQUENCE   271 AA;  31650 MW;  331EF850B762D9E1 CRC64;
     MADESQKTPW LVQYSSKYPN EHPRNLIPAL CREFYNLGWF TGTGGAFTIK YRYKIGITKK
     RNHWKRRNQR NRRNQDEYYF APSGVQKERI QPEDLFIHDS EDKEIAHPPP EKKLKRSQCV
     PLFMFAYSMR GAGAVIHSHS KYAVMVSLLD QEATEFRITH QQMIKGIFNS KSHMYHNFHD
     LLVIPIIENA PDEADLQEPF VEALKNYPET SAVIIRRHGL YVWGKTWQET KAIAESYDYL
     FDLAIQMRKI GIDPAAKPKR CHLKCCQGAE S