ID   MTNB_GRABC              Reviewed;         214 AA.
AC   Q0BPT9;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   16-DEC-2008, sequence version 2.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=Methylthioribulose-1-phosphate dehydratase {ECO:0000255|HAMAP-Rule:MF_01677};
DE            Short=MTRu-1-P dehydratase {ECO:0000255|HAMAP-Rule:MF_01677};
DE            EC=4.2.1.109 {ECO:0000255|HAMAP-Rule:MF_01677};
GN   Name=mtnB {ECO:0000255|HAMAP-Rule:MF_01677};
GN   OrderedLocusNames=GbCGDNIH1_2265;
OS   Granulibacter bethesdensis (strain ATCC BAA-1260 / CGDNIH1).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC   Acetobacteraceae; Granulibacter.
OX   NCBI_TaxID=391165;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1260 / CGDNIH1;
RX   PubMed=17827295; DOI=10.1128/jb.00793-07;
RA   Greenberg D.E., Porcella S.F., Zelazny A.M., Virtaneva K., Sturdevant D.E.,
RA   Kupko J.J. III, Barbian K.D., Babar A., Dorward D.W., Holland S.M.;
RT   "Genome sequence analysis of the emerging human pathogenic acetic acid
RT   bacterium Granulibacter bethesdensis.";
RL   J. Bacteriol. 189:8727-8736(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_01677}.
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_01677};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01677};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01677};
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_01677}.
CC   -!- SIMILARITY: Belongs to the aldolase class II family. MtnB subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01677}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABI63163.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000394; ABI63163.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_043453181.1; NC_008343.2.
DR   AlphaFoldDB; Q0BPT9; -.
DR   SMR; Q0BPT9; -.
DR   STRING; 391165.GbCGDNIH1_2265; -.
DR   EnsemblBacteria; ABI63163; ABI63163; GbCGDNIH1_2265.
DR   KEGG; gbe:GbCGDNIH1_2265; -.
DR   eggNOG; COG0235; Bacteria.
DR   HOGENOM; CLU_006033_4_1_5; -.
DR   UniPathway; UPA00904; UER00875.
DR   Proteomes; UP000001963; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:InterPro.
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_01677; Salvage_MtnB; 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   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; Lyase; Metal-binding; Methionine biosynthesis;
KW   Reference proteome; Zinc.
FT   CHAIN           1..214
FT                   /note="Methylthioribulose-1-phosphate dehydratase"
FT                   /id="PRO_0000357083"
FT   BINDING         103
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01677"
FT   BINDING         105
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01677"
SQ   SEQUENCE   214 AA;  23025 MW;  BFB57741B27F38B3 CRC64;
     MTGTVTSVRQ PPEWAAVTIV AAGQRMDARG WVPATAGNIS VRLPDDTIAI TSSGNHKGFL
     KTSDIMVVDQ AGKPLTPGLK PSAETLLHCQ IYRLDNQAGA VVHGHSVAAT VLSMAPGKND
     APPDFIRLEG YEVLKAFGVK THQITLDLPI LDNDQDMERL ASIAEPILLR GAPLGYLIRG
     HGVYVWGGDM AAALARLEGL EFLLACELER RRLR