| Abstract: | A diamine oxidase has been purified (ca 40-fold) from 5-day old etiolated seedlings of L. sativus by MnCl2 treatment, (NH4)2SO4 and Me2CO fractionations, positive adsorption on alumina Cγ-gel followed by column chromatography on DEAE-Sephadex. This cytosol enzyme oxidatively deaminates a number of aliphatic and aryl alkylamines but not histamine. NSD-1055, semicarbazide and other carbonyl reagents, α,α'bipyridyl, 1,10-phenanthroline and 8-hydroxyquinoline inhibit the enzyme. Pargyline, SKF trans-385, atabrine were without effect on the enzyme. |
