Conformational Polymorphism in Autophagy-Related Protein Gate-16.Ma, P., Schillinger, O., Schwarten, M., Lecher, J., Hartmann, R., Stoldt, M., Mohrluder, J., Olubiyi, O., Strodel, B., Willbold, D., Weiergraber, O.H.
(2015) Biochemistry 54: 5469
- PubMed: 26284781
- DOI: https://doi.org/10.1021/acs.biochem.5b00366
- Primary Citation of Related Structures:
- PubMed Abstract:
Autophagy is a fundamental homeostatic process in eukaryotic organisms, fulfilling essential roles in development and adaptation to stress. Among other factors, formation of autophagosomes critically depends on proteins of the Atg8 (autophagy-related protein 8) family, which are reversibly conjugated to membrane lipids. We have applied X-ray crystallography, nuclear magnetic resonance spectroscopy, and molecular dynamics simulations to study the conformational dynamics of Atg8-type proteins, using GATE-16 (Golgi-associated ATPase enhancer of 16 kDa), also known as GABARAPL2, as a model system. This combination of complementary approaches provides new insight into a structural transition centered on the C-terminus, which is crucial for the biological activity of these proteins.
Institut für Physikalische Biologie und BMFZ, Heinrich-Heine-Universität Düsseldorf , 40225 Düsseldorf, Germany.