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[使用“比率”方法鉴定“酶/转运体 - 底物 - 效应物”系统中酶/转运过程的机制]

[Identification of mechanism of enzyme/transport process in the system of "enzyme/ transporter--substrate--effector" using the "ratio" method].

作者信息

Karakhim S O, Horchev V F, Kosterin S O

出版信息

Ukr Biokhim Zh (1999). 2007 Mar-Apr;79(2):97-113.

PMID:18030757
Abstract

Using equilibrium assumption the analysis of kinetics of enzyme/transport process has been developed. In the course of this process the enzyme can interact simultaneously with substrate S and effector E and as a result two products are generated: P1 (from substrate) and P2 (from effector) after catalytic effect of enzyme or transportation across the biological membrane. It has been demonstrated that the ratio (R = V0,1/V0,2) of initial rates of formation of reaction products P, (V0,1) and P2 (V0,2) represented in linearized form as a dependence on concentration of both substrate S0 and effector E0 allows to identify a specific mechanism of the present process. An algorithm of such identification has been developed.

摘要

利用平衡假设,已开展了酶/转运过程动力学分析。在此过程中,酶可同时与底物S和效应物E相互作用,结果产生两种产物:经酶的催化作用或跨生物膜转运后,来自底物的P1和来自效应物的P2。已证明,反应产物P1(V0,1)和P2(V0,2)初始形成速率的比值(R = V0,1/V0,2)以线性化形式表示为对底物S0和效应物E0浓度的依赖关系,这有助于确定当前过程的特定机制。已开发出一种进行此类识别的算法。

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