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| 001 | 829376 | ||
| 005 | 20240625095127.0 | ||
| 024 | 7 | _ | |a 10.1038/srep45761 |2 doi |
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| 100 | 1 | _ | |a Sena, Diniz M. |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Structural heterogeneity of the $μ$-opioid receptor’s conformational ensemble in the apo state |
| 260 | _ | _ | |a London |c 2017 |b Nature Publishing Group |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a G-protein coupled receptors (GPCRs) are the largest and most pharmaceutically relevant family of membrane proteins. Here, fully unbiased, enhanced sampling simulations of a constitutively active mutant (CAM) of a class A GPCR, the μ-opioid receptor (μOR), demonstrates repeated transitions between the inactive (IS) and active-like (AS-L) states. The interconversion features typical activation/inactivation patterns involving established conformational rearrangements of conserved residues. By contrast, wild-type μOR remains in IS during the same course of simulation, consistent with the low basal activity of the protein. The simulations point to an important role of residue W2936.48 at the “toggle switch” in the mutation-induced constitutive activation. Such role has been already observed for other CAMs of class A GPCRs. We also find a significantly populated intermediate state, rather similar to IS. Based on the remarkable accord between simulations and experiments, we suggest here that this state, which has escaped so far experimental characterization, might constitute an early step in the activation process of the apo μOR CAM. |
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| 700 | 1 | _ | |a Cong, Xiaojing |0 P:(DE-HGF)0 |b 1 |e Corresponding author |
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| 700 | 1 | _ | |a Kless, Achim |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Carloni, Paolo |0 P:(DE-Juel1)145614 |b 4 |e Corresponding author |
| 773 | _ | _ | |a 10.1038/srep45761 |g Vol. 8, p. 45761 - |0 PERI:(DE-600)2615211-3 |p 45761 |t Scientific reports |v 7 |y 2017 |x 2045-2322 |
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