Probing the Binding Pocket of the Broadly Tuned Human Bitter Taste Receptor TAS2R14 by Chemical Modification of Cognate Agonists
作者:Rafik Karaman、Stefanie Nowak、Antonella Di Pizio、Hothaifa Kitaneh、Alaa Abu-Jaish、Wolfgang Meyerhof、Masha Y. Niv、Maik Behrens
DOI:10.1111/cbdd.12734
日期:2016.7
that this receptor possesses a large readily accessible ligand binding pocket. To allow probing the accessibility and size of the ligand binding pocket, we chemically modified cognate agonists and tested receptor responses in functional assays. The addition of large functional groups to agonists was usually possible without abolishing agonistic activity. The newly synthesized agonist derivatives were modeled
通过一组〜感测口腔中潜在有害的苦味物质25种受体,称为TAS2Rs,在专门的感觉细胞中表达,可识别苦味化合物的单个但重叠的组。受体的调节范围从狭窄到广泛调节的受体都不同。TAS2R14是最广泛调节的人类苦味受体之一,它可识别多种化学多样的合成和天然苦味化合物,包括多种药物。这表明该受体具有大的易于接近的配体结合口袋。为了探测配体结合口袋的可及性和大小,我们化学修饰了同源激动剂,并在功能测定中测试了受体反应。通常可以在不消除激动活性的情况下向激动剂添加大的官能团。该系列化合物的体外活性。