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关于酶不可逆抑制中反应级数与化学计量学之间的关系

On the relationship between reaction order and stoichiometry in irreversible inhibition of enzymes.

作者信息

Ozer I

出版信息

Arch Biochem Biophys. 1986 Feb 15;245(1):153-6. doi: 10.1016/0003-9861(86)90199-2.

DOI:10.1016/0003-9861(86)90199-2
PMID:3947096
Abstract

The relationship between reaction order and stoichiometry in inhibition of enzymes by potentially irreversible inhibitors is discussed. It is pointed out that in an overwhelming fraction of cases reported or imagined, the order in inhibitor concentration approximates one, regardless of actual stoichiometry. It follows that reaction order should not be employed as a reliable measure of the number of amino acid residues involved in the inactivation process.

摘要

讨论了潜在不可逆抑制剂对酶抑制作用中反应级数与化学计量关系。指出在已报道或设想的绝大多数情况下,抑制剂浓度的反应级数近似为一级,而与实际化学计量无关。因此,反应级数不应被用作衡量失活过程中涉及氨基酸残基数量的可靠指标。

相似文献

1
On the relationship between reaction order and stoichiometry in irreversible inhibition of enzymes.关于酶不可逆抑制中反应级数与化学计量学之间的关系
Arch Biochem Biophys. 1986 Feb 15;245(1):153-6. doi: 10.1016/0003-9861(86)90199-2.
2
[Stationary kinetics of multisubstrate enzymatic reactions. Inhibition by reaction products, reversible and irreversible inhibitors].[多底物酶促反应的稳态动力学。反应产物的抑制作用、可逆和不可逆抑制剂]
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Enzyme inhibition as visualized with the reservoir model: relationships between I50 and inhibition constant(s) of an enzyme inhibitor.用储库模型可视化的酶抑制作用:酶抑制剂的半数抑制浓度(I50)与抑制常数之间的关系。
Comput Biol Med. 1994 Mar;24(2):129-44. doi: 10.1016/0010-4825(94)90071-x.
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Precautions when determining kinetically the order of inactivation of enzymes by functionally irreversible inhibitors.通过功能不可逆抑制剂动力学测定酶失活顺序时的注意事项。
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Competitive irreversible inhibition of enzymes in the presence of a substrate: scope and limitations.底物存在时酶的竞争性不可逆抑制作用:范围与局限性
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Substrate-inhibition and substrate-activation in the random-order ternary-complex mechanism for enzyme reactions involving two substrates.涉及两种底物的酶反应随机顺序三元复合物机制中的底物抑制和底物激活。
Biochim Biophys Acta. 1977 Sep 15;484(1):199-207. doi: 10.1016/0005-2744(77)90125-5.
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[Substrate inhibition as a cause of oscillations in an open irreversible enzymic reaction S1 + S2 in the presence of E(R,T) leads to S1' + S2'. A mathematical model].[在存在E(R,T)的情况下,底物抑制作为开放不可逆酶促反应S1 + S2中振荡的原因导致S1' + S2'。一个数学模型]
Biokhimiia. 1977 Apr;42(4):639-46.
8
Use of competitive inhibitors to study substrate binding order.
Methods Enzymol. 1979;63:467-86. doi: 10.1016/0076-6879(79)63020-3.
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Electrostatic effects on the kinetics of bound enzymes.静电对结合酶动力学的影响。
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Evaluation of enzyme systems and their regulation: the inapplicability of irreversible thermodynamics.酶系统及其调控的评估:不可逆热力学的不适用性。
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