AC   MF_01677;
DC   Protein; auto
TR   HAMAP; MF_01677; -; 1; level=0
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Names: Salvage_MtnB
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ID   MTNB
DE   RecName: Full=Methylthioribulose-1-phosphate dehydratase;
DE            Short=MTRu-1-P dehydratase;
DE            EC=4.2.1.109;
GN   Name=mtnB;
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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   -!- 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   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC       Note=Binds 1 zinc ion per subunit.;
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.
case <OC:Bacillaceae>
CC   -!- SUBUNIT: Homotetramer.
end case
CC   -!- SIMILARITY: Belongs to the aldolase class II family. MtnB subfamily.
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DR   Pfam; PF00596; Aldolase_II; 1; trigger=no
DR   NCBIfam; TIGR03328; Salvage_mtnB; 1; trigger=no
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KW   Amino-acid biosynthesis
KW   Lyase
KW   Metal-binding
KW   Methionine biosynthesis
KW   Zinc
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GO   GO:0008270; F:zinc ion binding
GO   GO:0046570; F:methylthioribulose 1-phosphate dehydratase activity
GO   GO:0019284; P:L-methionine salvage from S-adenosylmethionine
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FT   From: MTNB_BACSU (O31668)
FT   BINDING         98
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Condition: H
FT   BINDING         100
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Condition: H
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Size: 194-250;
Related: None;
Template: O31668;
Scope:
 Bacteria
Fusion:
 Nter: MF_01680 (mtnX)
 Cter: None
Duplicate: in XANOP
Plasmid: None
Comments: None
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# Revision 1.23 2023/06/01
//