Crystal structure of a constitutive active mutant of adenosine A2A receptor
Crystal structure of a constitutive active mutant of adenosine A2A receptor
复制标题
腺苷A2A受体组成型活性突变体的晶体结构
DOI:
10.1101/2021.09.08.459393
复制
发表时间:
2021-09
期刊:
影响因子:
--
通讯作者:
Gaojie Song
中科院分区:
文献类型:
--
作者:
Yuan Weng;Suwen Zhao;Qingtong Zhou;Min Cui;Deqiang Yao;Gaojie Song
Previously we reported a common activation pathway of the class A G protein-coupled receptors (GPCRs) in which a series of conserved residues/motifs undergo conformational change during extracellular agonist binding and finally induce the coupling of intracellular G protein, and successfully predicted several novel constitutive active or inactive mutations for A2A adenosine receptor (A2AAR) through this mechanism (Zhou et al., 2019). Here we determined the crystal structure of a typical A2AAR constitutive active mutant I92N in complex with agonist UK-432097 to reveal the molecular mechanism of mutation-induced constitutive activity. The mutated I92N forms a hydrophilic interaction network with nearby residues including W6.48 of the CWxP motif, which is absent in the wild type A2AAR. Although the mutant structure is overall similar to the previously determined intermediate state A2AAR structure (PDB ID: 3QAK), the molecular dynamics simulations suggested that the I92N mutant stabilizes the metastable intermediate state through the hydrophilic interaction network and favors the receptor conformational transition towards the active state. This research provides a structural template toward the special pharmacological outcome triggered by conformational mutation and sheds light on future structural or pharmacological studies among class A GPCRs.
登录
查看更多内容
影响因子:
--
作者:
Danoff, Joshua S.;Whelan, Emma A.;Connelly, Jessica J.
通讯作者:
Connelly, Jessica J.
影响因子:
3
作者:
Vanommeslaeghe, K.;Hatcher, E.;Acharya, C.;Kundu, S.;Zhong, S.;Shim, J.;Darian, E.;Guvench, O.;Lopes, P.;Vorobyov, I.;MacKerell, A. D., Jr.
通讯作者:
MacKerell, A. D., Jr.
DOI:
10.1101/362970
发表时间:
2018-07
期刊:
Structure(London, England:1993)
影响因子:
--
作者:
Wanling Song;Hsin-Yung Yen;C. Robinson;M. Sansom
通讯作者:
Wanling Song;Hsin-Yung Yen;C. Robinson;M. Sansom
影响因子:
19.6
作者:
Erdelyi, Laszlo S.;Mann, W. Alexander;Hunyady, Laszlo
通讯作者:
Hunyady, Laszlo
影响因子:
64.8
作者:
Ye, Libin;Van Eps, Ned;Prosser, R. Scott
通讯作者:
Prosser, R. Scott