Title : GDP Release from the Open Conformation of Gα Requires Allosteric Signaling from the Agonist-Bound Human β2 Adrenergic Receptor.

Pub. Date : 2020 Aug 24

PMID : 32786510






5 Functional Relationships(s)
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1 GDP Release from the Open Conformation of Galpha Requires Allosteric Signaling from the Agonist-Bound Human beta2 Adrenergic Receptor. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
2 Interestingly, while GDP remained bound with the Galpha-protein for the two inactive systems (antagonist-bound and apo form), GDP dissociated from the open conformation of the Galpha protein for the agonist activated system. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
3 Interestingly, while GDP remained bound with the Galpha-protein for the two inactive systems (antagonist-bound and apo form), GDP dissociated from the open conformation of the Galpha protein for the agonist activated system. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
4 Based on residue interaction network analysis, we observed that engagement of agonist-bound beta2AR with an alpha5 helix of Galpha is essential for the GDP release and the residues in the phosphate-binding loop, alpha1 helix, and alpha5 helix play very important roles in the GDP release. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
5 Based on residue interaction network analysis, we observed that engagement of agonist-bound beta2AR with an alpha5 helix of Galpha is essential for the GDP release and the residues in the phosphate-binding loop, alpha1 helix, and alpha5 helix play very important roles in the GDP release. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens