title: [Proteinases of hydrobionts--potential objects of fish feeding].
abstract: The review analyzes data on activities and characteristics of proteinases of digestive system and of cathepsins of various tissues in potential preys of fish differing by the character of feeding. There are presented data on multiple forms and molecular mass of proteinases, species-related differences, dependence of proteinase activities on the life cycle stages, type of nutrition, and biochemical food composition as well as on temperature and pH optima. Role of cathepsin in evolution of enzymatic systems providing degradation of food protein components in fish is discussed.
authors: N V
authors: NV
authors: Ushakova
authors: V V
authors: VV
authors: Kuz'mina