[Fluorescence proper of phospholipase A2 and orientotoxin from the venom of the giant hornet in the presence of ionic modulators of their membrane activity]. / Issledovanie sobstvennoi fluorestsentsii fosfolipazy A2 i orientotoksina iz iada bol'shogo shershnia v prisutstvii ionov--modulia-torov ikh membrannoi aktivnosti.

The own fluorescence of phospholipase A2 and orientotoxin at interaction of these components from Oriental hornet venom with calcium, strontium, lantan, magnesium ions has been investigated. Ca2+, La3+, Sr2+--activators of phospholipase activity--increase the quantum output of fluorescence. In the presence of Ca2+ the temperature of semitransitional process of thermoinactivation of investigated polypeptides increases by 2 degrees C.