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show all sequences of 2.3.1.B38

PqsBC, a condensing enzyme in the biosynthesis of the Pseudomonas aeruginosa quinolone signal: crystal structure, inhibition, and reaction mechanism

Drees, S.L.; Li, C.; Prasetya, F.; Saleem, M.; Dreveny, I.; Williams, P.; Hennecke, U.; Emsley, J.; Fetzner, S.; J. Biol. Chem. 291, 6610-6624 (2016)

Data extracted from this reference:

Cloned(Commentary)
Commentary
Organism
-
Pseudomonas aeruginosa
Crystallization (Commentary)
Crystallization
Organism
mutant C129A, to 2 A resolution, space group P212121. The heterodimer displays a pseudo 2fold symmetry. Subunit PqsC has an active site comprised of Cys129 and His269
Pseudomonas aeruginosa
Engineering
Amino acid exchange
Commentary
Organism
C129A
mutation in catalytic dyad, crystallization data
Pseudomonas aeruginosa
V299N
substitution leads to significant activity toward the deamino substrate analog benzoylacetate, suggesting that the substrate 2-aminobenzoylacetate itself supplies the asparagine-equivalent amino function that assists in catalysis
Pseudomonas aeruginosa
Inhibitors
Inhibitors
Commentary
Organism
Structure
2-aminoacetophenone
pathway-inherent competitive inhibitor. EC50 of 46 microM in the in vitro assay
Pseudomonas aeruginosa
additional information
2-heptyl-4(1H)-quinolone and 2-heptyl-3-hydroxy-4(1H)-quinolone as well as ,4-dihydroxyquinoline at concentrations up to 50 microM do not affect PqsBC activity
Pseudomonas aeruginosa
KM Value [mM]
KM Value [mM]
KM Value Maximum [mM]
Substrate
Commentary
Organism
Structure
0.006
-
Octanoyl-CoA
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
0.105
-
2-aminobenzoylacetate
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
Natural Substrates/ Products (Substrates)
Natural Substrates
Organism
Commentary (Nat. Sub.)
Natural Products
Commentary (Nat. Pro.)
Organism (Nat. Pro.)
Reversibility
additional information
Pseudomonas aeruginosa
the catalytic His269 residue is not involved in acyl-enzyme formation, but contributes to an acylation-dependent increase in affinity for the second substrate 2-aminobenzoylacetate. Octanoylation of Cys129 of PqsC is independent of His269
?
-
-
-
octanoyl-CoA + 2-aminobenzoylacetate
Pseudomonas aeruginosa
-
CoA + 2-heptylquinolin-4(1H)-one + CO2 + H2O
product is a signal molecule in Pseudomonas aeruginosa. The initial product is 1-(2-aminophenyl)decane-1,3-dione which spontaneously rearranges to the product under the elimination of water
-
?
Organism
Organism
Primary Accession No. (UniProt)
Commentary
Textmining
Pseudomonas aeruginosa
Q9I4X1
subunit PqsC
-
Substrates and Products (Substrate)
Substrates
Commentary Substrates
Literature (Substrates)
Organism
Products
Commentary (Products)
Literature (Products)
Organism (Products)
Reversibility
additional information
the catalytic His269 residue is not involved in acyl-enzyme formation, but contributes to an acylation-dependent increase in affinity for the second substrate 2-aminobenzoylacetate. Octanoylation of Cys129 of PqsC is independent of His269
736509
Pseudomonas aeruginosa
?
-
-
-
-
octanoyl-CoA + 2-aminobenzoylacetate
-
736509
Pseudomonas aeruginosa
CoA + 2-heptylquinolin-4(1H)-one + CO2 + H2O
product is a signal molecule in Pseudomonas aeruginosa. The initial product is 1-(2-aminophenyl)decane-1,3-dione which spontaneously rearranges to the product under the elimination of water
-
-
?
Turnover Number [1/s]
Turnover Number Minimum [1/s]
Turnover Number Maximum [1/s]
Substrate
Commentary
Organism
Structure
6.8
-
Octanoyl-CoA
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
Ki Value [mM]
Ki Value [mM]
Ki Value maximum [mM]
Inhibitor
Commentary
Organism
Structure
0.054
0.056
2-aminoacetophenone
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
Cloned(Commentary) (protein specific)
Commentary
Organism
-
Pseudomonas aeruginosa
Crystallization (Commentary) (protein specific)
Crystallization
Organism
mutant C129A, to 2 A resolution, space group P212121. The heterodimer displays a pseudo 2fold symmetry. Subunit PqsC has an active site comprised of Cys129 and His269
Pseudomonas aeruginosa
Engineering (protein specific)
Amino acid exchange
Commentary
Organism
C129A
mutation in catalytic dyad, crystallization data
Pseudomonas aeruginosa
V299N
substitution leads to significant activity toward the deamino substrate analog benzoylacetate, suggesting that the substrate 2-aminobenzoylacetate itself supplies the asparagine-equivalent amino function that assists in catalysis
Pseudomonas aeruginosa
Inhibitors (protein specific)
Inhibitors
Commentary
Organism
Structure
2-aminoacetophenone
pathway-inherent competitive inhibitor. EC50 of 46 microM in the in vitro assay
Pseudomonas aeruginosa
additional information
2-heptyl-4(1H)-quinolone and 2-heptyl-3-hydroxy-4(1H)-quinolone as well as ,4-dihydroxyquinoline at concentrations up to 50 microM do not affect PqsBC activity
Pseudomonas aeruginosa
Ki Value [mM] (protein specific)
Ki Value [mM]
Ki Value maximum [mM]
Inhibitor
Commentary
Organism
Structure
0.054
0.056
2-aminoacetophenone
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
KM Value [mM] (protein specific)
KM Value [mM]
KM Value Maximum [mM]
Substrate
Commentary
Organism
Structure
0.006
-
Octanoyl-CoA
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
0.105
-
2-aminobenzoylacetate
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
Natural Substrates/ Products (Substrates) (protein specific)
Natural Substrates
Organism
Commentary (Nat. Sub.)
Natural Products
Commentary (Nat. Pro.)
Organism (Nat. Pro.)
Reversibility
additional information
Pseudomonas aeruginosa
the catalytic His269 residue is not involved in acyl-enzyme formation, but contributes to an acylation-dependent increase in affinity for the second substrate 2-aminobenzoylacetate. Octanoylation of Cys129 of PqsC is independent of His269
?
-
-
-
octanoyl-CoA + 2-aminobenzoylacetate
Pseudomonas aeruginosa
-
CoA + 2-heptylquinolin-4(1H)-one + CO2 + H2O
product is a signal molecule in Pseudomonas aeruginosa. The initial product is 1-(2-aminophenyl)decane-1,3-dione which spontaneously rearranges to the product under the elimination of water
-
?
Substrates and Products (Substrate) (protein specific)
Substrates
Commentary Substrates
Literature (Substrates)
Organism
Products
Commentary (Products)
Literature (Products)
Organism (Products)
Reversibility
additional information
the catalytic His269 residue is not involved in acyl-enzyme formation, but contributes to an acylation-dependent increase in affinity for the second substrate 2-aminobenzoylacetate. Octanoylation of Cys129 of PqsC is independent of His269
736509
Pseudomonas aeruginosa
?
-
-
-
-
octanoyl-CoA + 2-aminobenzoylacetate
-
736509
Pseudomonas aeruginosa
CoA + 2-heptylquinolin-4(1H)-one + CO2 + H2O
product is a signal molecule in Pseudomonas aeruginosa. The initial product is 1-(2-aminophenyl)decane-1,3-dione which spontaneously rearranges to the product under the elimination of water
-
-
?
Turnover Number [1/s] (protein specific)
Turnover Number Minimum [1/s]
Turnover Number Maximum [1/s]
Substrate
Commentary
Organism
Structure
6.8
-
Octanoyl-CoA
pH 8.2, temperature not specified in the publication
Pseudomonas aeruginosa
Other publictions for EC 2.3.1.B38
No.
1st author
Pub Med
title
organims
journal
volume
pages
year
Activating Compound
Application
Cloned(Commentary)
Crystallization (Commentary)
Engineering
General Stability
Inhibitors
KM Value [mM]
Localization
Metals/Ions
Molecular Weight [Da]
Natural Substrates/ Products (Substrates)
Organic Solvent Stability
Organism
Oxidation Stability
Posttranslational Modification
Purification (Commentary)
Reaction
Renatured (Commentary)
Source Tissue
Specific Activity [micromol/min/mg]
Storage Stability
Substrates and Products (Substrate)
Subunits
Temperature Optimum [C]
Temperature Range [C]
Temperature Stability [C]
Turnover Number [1/s]
pH Optimum
pH Range
pH Stability
Cofactor
Ki Value [mM]
pI Value
IC50 Value
Activating Compound (protein specific)
Application (protein specific)
Cloned(Commentary) (protein specific)
Cofactor (protein specific)
Crystallization (Commentary) (protein specific)
Engineering (protein specific)
General Stability (protein specific)
IC50 Value (protein specific)
Inhibitors (protein specific)
Ki Value [mM] (protein specific)
KM Value [mM] (protein specific)
Localization (protein specific)
Metals/Ions (protein specific)
Molecular Weight [Da] (protein specific)
Natural Substrates/ Products (Substrates) (protein specific)
Organic Solvent Stability (protein specific)
Oxidation Stability (protein specific)
Posttranslational Modification (protein specific)
Purification (Commentary) (protein specific)
Renatured (Commentary) (protein specific)
Source Tissue (protein specific)
Specific Activity [micromol/min/mg] (protein specific)
Storage Stability (protein specific)
Substrates and Products (Substrate) (protein specific)
Subunits (protein specific)
Temperature Optimum [C] (protein specific)
Temperature Range [C] (protein specific)
Temperature Stability [C] (protein specific)
Turnover Number [1/s] (protein specific)
pH Optimum (protein specific)
pH Range (protein specific)
pH Stability (protein specific)
pI Value (protein specific)
Expression
General Information
General Information (protein specific)
Expression (protein specific)
KCat/KM [mM/s]
KCat/KM [mM/s] (protein specific)
736509
Drees
PqsBC, a condensing enzyme in ...
Pseudomonas aeruginosa
J. Biol. Chem.
291
6610-6624
2016
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735925
Dulcey
The end of an old hypothesis: ...
Pseudomonas aeruginosa, Pseudomonas aeruginosa UCBPP-PA14
Chem. Biol.
20
1481-1491
2013
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