A model of the active site of dipeptidyl peptidase IV predicted by comparative molecular field analysis and molecular modelling simulations.

A model of the active site of dipeptidyl peptidase IV predicted by comparative molecular field analysis and molecular modelling simulations.
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通过比较分子场分析和分子建模模拟预测的二肽基肽酶 IV 活性位点模型。

DOI:
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发表时间:
2009
期刊:
International journal of peptide & protein research
影响因子:
--
通讯作者:
A. Barth
A. Barth
中科院分区:
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文献类型:
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作者:
W. Brandt;T. Lehmann;I. Thondorf;I. Born;M. Schutkowski;J. Rahfeld;K. Neubert;A. Barth

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基于竞争抑制剂的比较分子场分析(CoMFA)和力场计算,建立了丝氨酸蛋白酶二肽基肽酶IV (DPP IV或CD26)活性位点的分子模型。通过CoMFA的应用,成功地预测了抑制常数Ki。得到的CoMFA的空间和静电系数用于分子模型的建立。该模型的主要假设是酪氨酸(s1位)和色氨酸残基(s2位)的侧链对底物或抑制剂的识别。该模型有助于我们理解该酶的底物特异性的大量实验数据以及其他作者通过基因工程实验获得的结果。提出并讨论了一个新的丝氨酸蛋白酶家族的一般结论。
A molecular model of the active site of the serine protease dipeptidyl peptidase IV (DPP IV or CD26) has been developed on the basis of comparative molecular field analysis (CoMFA) of competitive inhibitors and by force field calculations. By application of CoMFA experimentally obtained inhibition constants Ki have been successfully predicted. The resulting steric and electrostatic coefficients of CoMFA were used for the development of the molecular model. The main assumptions of the model are the recognition of substrates or inhibitors by the side chains of a tyrosine (S1-position) and a tryptophan residue (S2-position). The model helps us to understand a multitude of experimental data regarding the substrate specificity of this enzyme as well as results obtained by genetic engineering experiments by other authors. General conclusions concerning a new family of serine proteases are drawn and discussed.
具有混合 mu 激动剂/δ 拮抗剂特性的环状 β-酪啡肽类似物:合成、药理学表征和构象方面。
DOI: 10.1021/jm00034a011
发表时间: 1994
影响因子: 7.3
作者:
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DOI: --
发表时间: 1984
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
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通讯作者: Reinherz,EL
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