Download MendeleyCryo-EM structure of the human TACAN in a closed state.
Chen, X., Wang, Y., Li, Y., Lu, X., Chen, J., Li, M., Wen, T., Liu, N., Chang, S., Zhang, X., Yang, X., Shen, Y.(2022) Cell Rep 38: 110445-110445
- PubMed: 35235791
- DOI: https://doi.org/10.1016/j.celrep.2022.110445
- Primary Citation of Related Structures:
7F6V - PubMed Abstract:
TACAN is an ion channel-like protein that may be involved in sensing mechanical pain. Here, we present the cryo-electron microscopic structure of human TACAN (hTACAN). hTACAN forms a dimer in which each protomer consists of a transmembrane globular domain (TMD) containing six helices and an intracellular domain (ICD) containing two helices. Molecular dynamic simulations suggest that each protomer contains a putative ion conduction pore. A single-point mutation of the key residue Met207 greatly increases membrane pressure-activated currents. In addition, each hTACAN subunit binds one cholesterol molecule. Our data show the molecular assembly of hTACAN and suggest that wild-type hTACAN is in a closed state.
Organizational Affiliation:
State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300350, China; Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300350, China.
