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Literature summary for 3.1.1.45 extracted from

  • Beveridge, A.J.; Ollis, D.L.
    A theoretical study of substrate-induced activation of dienelactone hydrolase (1995), Protein Eng., 8, 135-142.
    View publication on PubMed

Crystallization (Commentary)

Crystallization (Comment) Organism
inhibitor, dienelactam, bound to DLH C123S Pseudomonas knackmussii

Protein Variants

Protein Variants Comment Organism
C123S maximal activity 20% that of the wild type protein Pseudomonas knackmussii

Inhibitors

Inhibitors Comment Organism Structure
dienelactam inhibitor binding studies Pseudomonas knackmussii

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
4-carboxymethylenebut-2-en-4-olide + H2O Pseudomonas knackmussii the enzyme is one of the enzymes of the halocatechol branch of the beta-ketoadipate pathway, a complex set of catabolic reactions used by bacteria for utilization of aromatic compounds ?
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?

Organism

Organism UniProt Comment Textmining
Pseudomonas knackmussii
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Reaction

Reaction Comment Organism Reaction ID
4-carboxymethylenebut-2-en-4-olide + H2O = 4-oxohex-2-enedioate mechanism Pseudomonas knackmussii
4-carboxymethylenebut-2-en-4-olide + H2O = 4-oxohex-2-enedioate the catalytic triad Cys123, His202 and Asp171 is a hybrid of the standard triads found in cysteine: Cys-His-Asn and serine: Ser-His-Asp proteases Pseudomonas knackmussii
4-carboxymethylenebut-2-en-4-olide + H2O = 4-oxohex-2-enedioate similar catalytic triads are found in alpha/beta hydrolase fold enzymes: DLH is the simplest one Pseudomonas knackmussii
4-carboxymethylenebut-2-en-4-olide + H2O = 4-oxohex-2-enedioate the active-site Cys123 residue is part of a triad of residues consisting of Cys123, His202 and Asp171, and is reminiscent of the serine/cysteine proteases Pseudomonas knackmussii

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-carboxymethylenebut-2-en-4-olide + H2O the enzyme is one of the enzymes of the halocatechol branch of the beta-ketoadipate pathway, a complex set of catabolic reactions used by bacteria for utilization of aromatic compounds Pseudomonas knackmussii ?
-
?
cis-4-carboxymethylenebut-2-en-4-olide + H2O
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Pseudomonas knackmussii 4-oxohex-2-enedioate
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?
additional information substrate binding studies Pseudomonas knackmussii ?
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?
trans-4-carboxymethylenebut-2-en-4-olide + H2O
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Pseudomonas knackmussii 4-oxohex-2-enedioate
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?

Subunits

Subunits Comment Organism
monomer alpha,beta protein Pseudomonas knackmussii

Synonyms

Synonyms Comment Organism
DLH
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Pseudomonas knackmussii