Beta2 adrenergic receptor-Gs protein complex: Difference between revisions

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== G-Protein variability ==
== G-Protein variability ==
The Gαs subunit consists of two domains, the <scene name='70/701430/Alpharas/1'>Ras domain (αRas)</scene> and the <scene name='70/701430/Alphahelical/1'>α-helical domain (αAH)</scene>. Both are involved in nucleotide binding. A big discovery made thanks to this structure is that the Gα subunit has large variability between its GTP bound (active) and nucleotide free states, where the αAH domain has a <scene name='70/701430/Gamorph/2'>variable position</scene> relative to the αRas domain.
The Gαs subunit consists of two domains, the <scene name='70/701430/Alpharas/2'>Ras domain (αRas)</scene> and the <scene name='70/701430/Alphahelical/2'>α-helical domain (αAH)</scene>. Both are involved in nucleotide binding. A big discovery made thanks to this structure is that the Gα subunit has large variability between its GTP bound (active) and nucleotide free states, where the αAH domain has a <scene name='70/701430/Gamorph/2'>variable position</scene> relative to the αRas domain.
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Dan Elran, Michal Harel, Joel L. Sussman, Alexander Berchansky