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【4565】そーせいG 437 【第3四半期決算発表2月14日予定】 (812レス)
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(ワッチョイ b78e-K9Vl)
2018/02/20(火)17:30
ID:RAsWa/Kl0(11/12)
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810: (ワッチョイ b78e-K9Vl) [] 2018/02/20(火) 17:30:09.30 ID:RAsWa/Kl0 ※BioRxiv: New Results: "Cryo-EM structure of the adenosine A2A receptor coupled to an engineered heterotrimeric G protein": Christopher G Tate. ・Posted February 19, 2018. Abstract The adenosine A2A receptor (A2AR) is a prototypical G protein-coupled receptor (GPCR) that couples to the heterotrimeric G protein GS. Here we determine the structure by electron cryo-microscopy (cryo-EM) of A2AR at pH 7.5 bound to the small molecule agonist NECA and coupled to an engineered heterotrimeric G protein, which contains mini-GS, the bg subunits and nanobody Nb35. Most regions of the complex have a resolution of ~3.8 Å or better. Comparison with the 3.4 Å resolution crystal structure shows that the receptor and mini-GS are virtually identical and that the density of the side chains and ligand are of comparable quality. However, the cryo-EM density map also indicates regions that are flexible in comparison to the crystal structures, which unexpectedly includes regions in the ligand binding pocket. In addition, an interaction between intracellular loop 1 of the receptor and the b subunit of the G protein was observed. http://hayabusa9.5ch.net/test/read.cgi/livemarket1/1517924072/810
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