GRM8

谷氨酸是中枢神经系统中主要的兴奋性神经递质，激活离子型和代谢型谷氨酸受体。谷氨酸能神经传递参与了正常大脑功能的大部分方面，在许多神经病理学条件下可能受到干扰。代谢型谷氨酸受体是一个G蛋白偶联受体家族，根据序列同源性、推测的信号转导机制和药理特性可分为3类I组包括GRM1和GRM5，这些受体已被证明激活磷脂酶C。II组包括GRM2和GRM3，而III组包括GRM4、GRM6、GRM7和GRM8II和III类受体与环AMP级联的抑制有关，但它们的激动剂选择性不同另外，编码不同亚型的剪接转录变体已经被描述为该基因[由RefSeq提供，2008年7月]
L-glutamate is the major excitatory neurotransmitter in the central nervous system and activates both ionotropic and metabotropic glutamate receptors. Glutamatergic neurotransmission is involved in most aspects of normal brain function and can be perturbed in many neuropathologic conditions. The metabotropic glutamate receptors are a family of G protein-coupled receptors, that have been divided into 3 groups on the basis of sequence homology, putative signal transduction mechanisms, and pharmacologic properties. Group I includes GRM1 and GRM5 and these receptors have been shown to activate phospholipase C. Group II includes GRM2 and GRM3 while Group III includes GRM4, GRM6, GRM7 and GRM8. Group II and III receptors are linked to the inhibition of the cyclic AMP cascade but differ in their agonist selectivities. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]