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Über die Wirkung von optisch aktiven Hydraziden auf die Diamin-oxydase. 14. Mitteilung über Amin-oxydasen

✍ Scribed by E. Albert Zeller; Lorry A. Blanksma; John A. Carbon


Publisher
John Wiley and Sons
Year
1957
Tongue
German
Weight
252 KB
Volume
40
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

The hydrazides of both optical isomers of amino acids and isolysergic acid were tested for effects on amine oxidases. There was little action on monoamine oxidase (MO). However, some of the amino acid hydrazides, such as L‐leucylhydrazide, turned out to be very effective inhibitors of diamine oxidase (DO). In every instance there was a significant difference between the action of the two antipodes. In seven pairs of antipodal amino acid derivatives, the L‐form was much more effective than the D‐form. Some conclusions about the optical configuration of the reactive site of DO have been drawn. The possible relationship between the low efficiency of the D‐amino acid isomers as inhibitors and their low toxicity, as reported in the literature, has been discussed.


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Über die Wirkung von symmetrischen 1,2-D
✍ John A. Carbon; Willy P. Burkard; E. Albert Zeller 📂 Article 📅 1958 🏛 John Wiley and Sons 🌐 German ⚖ 402 KB

## Abstract The pI~50~‐values of 1,2‐dimethyl‐, 1,2‐diethyl‐ and 1,2‐dipropyl‐hydrazine are of the order 4,7 for monoamine oxidase (MO) and about 5,8 for diamine oxidase (DO). For both enzymes the pI~50~‐values of 1,2‐diisopropylhydrazine are much smaller^30^). Under conditions similar to those of