Download MendeleyCrystal structure of a central stalk subunit C and reversible association/dissociation of vacuole-type ATPase.
Iwata, M., Imamura, H., Stambouli, E., Ikeda, C., Tamakoshi, M., Nagata, K., Makyio, H., Hankamer, B., Barber, J., Yoshida, M., Yokoyama, K., Iwata, S.(2004) Proc Natl Acad Sci U S A 101: 59-64
- PubMed: 14684831
- DOI: https://doi.org/10.1073/pnas.0305165101
- Primary Citation of Related Structures:
1R5Z - PubMed Abstract:
The vacuole-type ATPases (V-ATPases) exist in various intracellular compartments of eukaryotic cells to regulate physiological processes by controlling the acidic environment. The crystal structure of the subunit C of Thermus thermophilus V-ATPase, homologous to eukaryotic subunit d of V-ATPases, has been determined at 1.95-A resolution and located into the holoenzyme complex structure obtained by single particle analysis as suggested by the results of subunit cross-linking experiments. The result shows that V-ATPase is substantially longer than the related F-type ATPase, due to the insertion of subunit C between the V(1) (soluble) and the V(o) (membrane bound) domains. Subunit C, attached to the V(o) domain, seems to have a socket like function in attaching the central-stalk subunits of the V(1) domain. This architecture seems essential for the reversible association/dissociation of the V(1) and the V(o) domains, unique for V-ATPase activity regulation.
Organizational Affiliation:
ATP System Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation, 5800-3 Nagatsuta, Midori-ku, Yokohama 226-0026, Japan.
