鱼类和哺乳动物膜消化的比较分子特征

Comparative-molecular characterization of membrane digestion in fish and mammals.

作者信息

Ugolev A M, Egorova V V, Kuz'mina V V, Grusdkov A A

出版信息

Comp Biochem Physiol B. 1983;76(3):627-35. doi: 10.1016/0305-0491(83)90305-x.

Abstract

The role of different parts of enzyme-membrane complexes in relation to the digestive membrane enzymes in some fish species of varying ecology are compared with those of the rat as a representative of homoiothermic animal. The activity of enzymes in various animal species at 25 degrees C, t degrees-function, Eact, Km and Vmax for different forms of alkaline phosphatase, sucrase and maltase is described. Adaptibility to a specific temperature is determined by both the phospholipid matrix and the enzyme protein globule including its hydrophobic part; their roles in adaptation of different enzymes (carbohydrases and alkaline phosphatase) differ.

摘要

将不同生态的某些鱼类酶 - 膜复合物的不同部分与作为恒温动物代表的大鼠的消化膜酶相关的作用进行了比较。描述了在25摄氏度时各种动物物种中酶的活性、不同形式碱性磷酸酶、蔗糖酶和麦芽糖酶的t度函数、活化能、米氏常数和最大反应速度。对特定温度的适应性由磷脂基质和包括其疏水部分的酶蛋白球状物共同决定；它们在不同酶（碳水化合物酶和碱性磷酸酶）适应过程中的作用有所不同。