• Corpus ID: 48609900

Indoleacetaldehyde Reductase of Cucumis sativus

@inproceedings{Brown2004IndoleacetaldehydeRO,
  title={Indoleacetaldehyde Reductase of Cucumis sativus},
  author={Hugh M. Brown and William K. Purves},
  year={2004}
}
Indoleacetaldehyde reductase catalyzes the conversion of indoleacetaldehyde to indole ethanol in extracts of Cucumis sativus L., with reduced pyridine nucleotide required as co-substrate. NADH and NADPH result in markedly different enzyme behavior, as reflected in reaction kinetics and in responses to inhibitors and activators. It is not yet clear whether there are two separate enzymes, one specific for NADH and the other for NADPH, or whether there is a single enzyme differentially influenced… 

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References

SHOWING 1-10 OF 12 REFERENCES
Isolation and characterization of indole-3-acetaldehyde reductases from Cucumis sativus.
Cucumber seedling indoleacetaldehyde oxidase.
TLDR
2,4-Dichlorophenoxyacetic acid strongly inhibited the indoleacetaldehyde oxidase activity, and it is proposed that this enzyme may be subject in vivo to feedback inhibition by indole-3-acetic Acid.
Indole-3-ethanol Oxidase: Kinetics, Inhibition, and Regulation by Auxins.
TLDR
The results may be interpreted as showing that IAA is a noncompetitive inhibitor which binds to that conformation of the enzyme which also binds indoleethanol, and the significance of these interactions for the regulation of IAA biosynthesis is discussed.
Isolation of Indole-3-ethanol Oxidase from Cucumber Seedlings.
TLDR
An enzyme is isolating from cucumber seedlings which catalyzes the oxidation of IEt to indole-3-acetaldehyde (IAAld), which has nearly maximum activity from pH 8 to 11 and appears to be reduced to H(2)O(2).
Auxin biogenesis: subcellular compartmentation of indoleacetaldehyde reductases in cucumber seedlings.
TLDR
Results indicate a division of the terminal steps of auxin biogenesis into at least two subcellular compartments, and two of the enzymes in the auxin biosynthetic pathway were localized.
Biosynthesis and Metabolism of Indol-3yl-acetic Acid
TLDR
A tryptamine-forming, L-tryptophan decarboxylase, isolated from tomato shoots, has been partially purified and characterized and compared with those of tryptophan transaminase isolated from the same tissue, and separation of these two enzymes by ammonium sulphate fractionation clearly demonstrated thattryptamine forma tion was due to the activity of the decar boxylase enzyme.
The interpretation of non-hyperbolic rate curves for two-substrate enzymes. A possible mechanism for phosphofructokinase.
TLDR
It has now been shown that the phenomena of substrate inhibition and activation may occur simultaneously in the following ways.
Isolation andIdentification ofIndole.3-Ethanol (Tryptophol)
TLDR
The most extenisively sttidied isindole-3-acetic acid, which has been isolated inpuire form from sev-eral sources (5,10,20).Toines etal.
Stray light interference in the spectrophotometric measurement of enzyme activity and determination of kinetic parameters.
  • J. Eyzaguirre
  • Biology
    Biochemical and biophysical research communications
  • 1974
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