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    • 6. 发明授权
    • Constitutively activated serotonin receptors
    • 组成型激活的5-羟色胺受体
    • US06255089B1
    • 2001-07-03
    • US09032742
    • 1998-02-27
    • Milt TeitlerKatharine Herrick-DavisChristina C. Egan
    • Milt TeitlerKatharine Herrick-DavisChristina C. Egan
    • C07K1472
    • C07K14/70571A01K2217/05
    • Mutations have been discovered in mammalian G protein-coupled serotonin 5-HT2A and 5-HT2C receptors which render the mutated receptors constitutively active. An alignment methodology based on the highly conserved sixth transmembrane domain has been discovered for the monoamine receptors which accurately predicts the amino acid position in the third intracellular loop which, when mutated, produces constitutive activation of the receptor. Constitutive activation of the G protein-coupled serotonin receptors has been shown by the demonstration of an enhanced affinity and potency for serotonin, by increased basal activity of the second messenger system in the absence of agonist, and by reduction of the basal second messenger activity by inverse agonists.
    • 在哺乳动物G蛋白偶联的5-羟色胺5-HT2A和5-HT2C受体中已经发现突变,其使突变的受体组成型活性。 已发现基于高度保守的第六跨膜结构域的比对方法用于单胺受体,其精确地预测第三细胞内环路中的氨基酸位置,其在突变时产生受体的组成型激活。 已经证明通过增加在不存在激动剂的情况下增加第二信使系统的基础活性以及通过减少基础第二信使活性来增强5-羟色胺的亲和力和效力,从而证明了G蛋白偶联的5-羟色胺受体的组成型活化 反向激动剂。