期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 21, 期 9, 页码 2764-2768出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2010.10.045
关键词
Carbonic anhydrase; Enzyme activator; Enzyme inhibitor; X-ray crystallography; Histamine; Pyridinium salt
资金
- European Union
- Temple University School of Pharmacy-Dean's Office
- TUSP Alumni Association
The 2,4,6-trimethylpyridinium derivative of histamine is an effective activator of the zinc enzyme carbonic anhydrase (CA, EC 4.2.1.1). However, unlike other CA activators, which bind at the entrance of the active site cavity, an X-ray crystal structure of hCA II in complex with the 1-[2-(1H-imidazol-4-yl)-ethyl]-2,4,6-trimethylpyridinium salt evidenced a binding mode never observed before either for activators or inhibitors of this enzyme, with the 2,4,6-trimethylpyridinium ring pointing towards the metal ion deep within the enzyme cavity, and several strong hydrophobic interactions stabilizing the adduct. Indeed, incubation of the activator with the enzyme for several days leads to potent inhibitory effects. This is the first example of a CA activator which after a longer contact with the enzyme behaves as an inhibitor. (C) 2010 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据