[Mediator function of molecular factors--lipoxygenase enzyme systems during exposure to ionizing radiation].

This paper, which is a review of the national literature on the mediatory function of lipoxygenase systems affected by ionizing radiation, reports data on the functional role of lipoxygenases, their regulator--mediate contribution to radiation response of plants and animals. The latest data are submitted concerning the biological regulatory systems, eicosanoids--leukotrienes, formed under the effect of lipoxygenases which catalyse oxidation of polyunsaturated arachidonic acid (20:4). The structure and function of leukotrienes are described for these are necessary in studying the biochemical functions of lipoxygenases after ionizing irradiation.

[Isolation and characteristics of lipoxygenase isoenzyme from pea seeds].

The individual isoenzyme lipoxygenase-2, a constituent of the heterogeneous lipoxygenase system (EC 1.13.11.

[Isoenzyme composition and some properties of pea lipoxygenase].

The isoenzyme composition and some properties of lipoxygenase isolated from the seeds and 10-day old sprouts of pea plant were studied. The enzyme activity assay, using gel- and ion-exchange chromatography, disc-electrophoresis in polyacrylamide gel, etc. revealed that the plant contains two lipoxygenase systems of unsaturated long-chain fatty acids oxidation.