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Structure of a nanobody-stabilized active state of the β2 adrenoceptor

Open access
Rasmussen, Søren G. F., Choi, Hee-Jung, Fung, Juan Jose, Pardon, Els, Casarosa, Paola, Chae, Pil Seok, DeVree, Brian T., Rosenbaum, Daniel M., Thian, Foon Sun, Kobilka, Tong Sun, Schnapp, Andreas, Konetzki, Ingo, Sunahara, Roger K., Gellman, Samuel H., Pautsch, Alexander, Steyaert, Jan, Weis, William I., Kobilka, Brian K.·2011·Nature

Abstract

G protein coupled receptors (GPCRs) exhibit a spectrum of functional behaviours in response to natural and synthetic ligands. Recent crystal structures provide insights into inactive states of several GPCRs. Efforts to obtain an agonist-bound active-state GPCR structure have proven difficult due to the inherent instability of this state in the absence of a G protein. We generated a camelid antibody fragment (nanobody) to the human β2 adrenergic receptor (β2AR) that exhibits G protein-like behaviour, and obtained an agonist-bound, active-state crystal structure of the receptor-nanobody complex. Comparison with the inactive β2AR structure reveals subtle changes in the binding pocket; however, these small changes are associated with an 11 Å outward movement of the cytoplasmic end of transmembrane segment 6, and rearrangements of transmembrane segments 5 and 7 that are remarkably similar to those observed in opsin, an active form of rhodopsin. This structure provides insights into the process of agonist binding and activation.

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Metadata

Authors
Rasmussen, S. G. F., Choi, H.-J., Fung, J. J., Pardon, E., Casarosa, P., Chae, P. S., DeVree, B. T., Rosenbaum, D. M., Thian, F. S., Kobilka, T. S., Schnapp, A., Konetzki, I., Sunahara, R. K., Gellman, S. H., Pautsch, A., Steyaert, J., Weis, W. I., & Kobilka, B. K.
Venue
Nature
Published
2011-01
Volume
469
Issue
7329
Pages
175-180
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2020601776
Cited by
1,680
References
6
FWCI
70.89
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Structure of a nanobody-stabilized active state of the β2 adrenoceptor. https://app.cochat.ai/papers/10.1038/nature09648
The paper
Rasmussen, S. G. F., Choi, H.-J., Fung, J. J., Pardon, E., Casarosa, P., Chae, P. S., DeVree, B. T., Rosenbaum, D. M., Thian, F. S., Kobilka, T. S., Schnapp, A., Konetzki, I., Sunahara, R. K., Gellman, S. H., Pautsch, A., Steyaert, J., Weis, W. I., & Kobilka, B. K. (2011). Structure of a nanobody-stabilized active state of the β2 adrenoceptor. Nature. https://doi.org/10.1038/nature09648

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.