产品编号 产品名称 试用装规格
HT1500005 GRK1 Antibody 30μl/支
HT1500006 GRK2 Antibody 30μl/支
HT1500007 GRK3 Antibody 30μl/支
HT1500008 GRK4 Antibody 30μl/支
HT1500009 GRK5 Antibody 30μl/支
HT1500010 GRK6 Antibody 30μl/支
HT1500011 GRK7 Antibody 30μl/支
G蛋白偶联受体激酶(GRK,G protein-coupled receptor kinases)系列抗体-----【免费试用】
产品背景介绍:
G 蛋白偶联受体激酶( G protein-coupled receptor kinases , GRKs) 是一簇与G蛋白偶联受体( GPCRs) 快速失敏( desensitization) 相关的激酶。许多GPCRs 如阿-片受体、血栓素受体、52羟色胺受体、肾上腺素能受体等在激动剂持续刺激时易发生转导信号的快速衰减,这种调节机制主要与GRKs有关。GRKs 家族由7 个结构上有同源序列的家族成员组成。每种GRKs 都含有共同的功能结构,包括1个中心催化区、1 个底物识别和含有G蛋白信号调节蛋白( regulators of Gprotein signaling ,RGS) 样结构的氨基末端区,以及1 个作用于胞膜的羧基末端区。
根据序列和功能的相似性可分为3 个亚家族:
第一个亚家族包括GRK1 和GRK7 。GRK1 是视紫质( rhodopsin) 激酶,仅在视网膜光受体细胞表达,作用底物是视网膜的视蛋白。
第二个亚家族的GRK2 和GRK3 又分别称为β2肾上腺素能受体激酶1 (β2ARK1) 和β2肾上腺素能受体激酶2 (β2ARK2)。
第三个亚家族包括GRK4 , GRK5 和GRK6 。
GRK4 仅在睾丸高水平表达,提示该酶具有底物的特异性。
G protein-coupled receptor kinases (GRKs, GPCRKs) are a family of protein kinases that regulate the activity of G protein- coupled receptors (GPCRs) by phosphorylating their intracellular domains after their associated G proteins have been released and activated. The phosphorylated serine and threonine residues act as binding sites for arrestin proteins that prevent the reassociation of the G proteins with their receptors, thereby preventing reactivation of the signaling pathway. GRKs regulate also cellular responses independent of their kinase activity. In particular, G protein-coupled receptor kinase 2 interacts with a diverse repertoire of non-GPCR substrates.
华拓生物现隆重推出G蛋白偶联受体激酶(GRK,G protein-coupled receptor kinases)系列抗体免费试用活动,各位科研用户凡填写好《免费试用抗体申请表》的均有机会获得免费试用机会,试用装数量有限,先到先得,送完即止。如实验成功并提供相关实验图片和信息的用户还可获得我司赠送的精美礼品,欢迎前来咨询与申请,请联系 0755-26055215,027-88189299(武汉办事处); QQ:1245980541, 487123558