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. 2001 Feb;125(2):1001–1011. doi: 10.1104/pp.125.2.1001

Table II.

Inhibition of maize β-UP by aryl propionic and aliphatic acids

Compound I50 Value
μm
3-Phenylpropionic acid 5.6
(S)-2-Phenylpropionic acid 5.7
(R)-2-Phenylpropionic acid 115.0
(RS)-2-Benzylpropionic acid 6.0
(RS)-2-(2,6-dinitrophenoxy)-propionic acid 0.5
Cyclopropanecarboxylic acid 8.0
Isobutyric acid 18.0
Propionic acid 25.0
N-Butyric acid 55.0

I50 values were determined at a substrate concentration of 8 μM.