Download MendeleyClose Identity between Alternatively Folded State N2 of Ubiquitin and the Conformation of the Protein Bound to the Ubiquitin-Activating Enzyme
Kitazawa, S., Kameda, T., Kumo, A., Yagi-Utsumi, M., Baxter, N.J., Kato, K., Williamson, M.P., Kitahara, R.(2014) Biochemistry 53: 447-449
- PubMed: 24401037
- DOI: https://doi.org/10.1021/bi401617n
- Primary Citation of Related Structures:
2RU6 - PubMed Abstract:
We present the nuclear Overhauser effect-based structure determination of the Q41N variant of ubiquitin at 2500 bar, where the alternatively folded N2 state is 97% populated. This allows us to characterize the structure of the "pure" N2 state of ubiquitin. The N2 state shows a substantial change in the orientation of strand β5 compared to that of the normal folded N1 state, which matches the changes seen upon binding of ubiquitin to ubiquitin-activating enzyme E1. The recognition of E1 by ubiquitin is therefore best explained by conformational selection rather than induced-fit motion.
Organizational Affiliation:
College of Pharmaceutical Sciences, Ritsumeikan University , Noji-higashi 1-1-1, Kusatsu 525-8577, Japan.
