5.4.3.8 4-Amino-5-fluoro-pentanoic acid - 91631 5.4.3.8 4-Amino-5-hexenoic acid - 91632 5.4.3.8 4-Amino-5-hexynoic acid - 43409 5.4.3.8 Aminooxyacetate - 1374 5.4.3.8 gabaculine - 1869 5.4.3.8 pyridoxal 5'-phosphate - 32 5.4.3.8 gabaculine 0.0005 mM, 50% inhibition. The inhibition is reversible up to 1 h after its addition, if the gabaculine is removed by gel filtration, before the enzyme is incubated by gel filtration, before the enzyme is incubated with substrate. Irreversible inhibition is obtained by preincubation of the enzyme at 30°C either for several hours with gabaculine alone or for a few min with both gabaculine and glutamate-1-semialdehyde 1869 5.4.3.8 gabaculine 0.005 mM, 83% inhibition. Irreversible inhibition which requires the presence of either glutamate-1-semialdehyde or 5-amino-4-oxopentanoate 1869 5.4.3.8 p-chloromercuribenzoate 0.1 mM, 45% inhibition 43 5.4.3.8 glyoxylate 20 mM, 27% inhibition 101