In a recent study published in Nature, scientists studied the bioenergetic machinery of a ciliate Tetrahymena thermophila.
Organisms have developed unique and highly optimal strategies to cater for their energetic needs. In a recent study published in Nature, scientists from Helsinki University in collaboration with groups from Sweden and UK studied the bioenergetic machinery of a ciliate Tetrahymena thermophila.
First, cryo-electron microscopy and tomography were applied to obtain a high-resolution 3D structure of its bioenergetic supercomplex. The highly bent supercomplex structure imparts a strong curvature to the inner mitochondrial membrane of Tetrahymena thermophila. The membrane bending was studied by coarse-grained molecular dynamics simulations performed by Outi Haapanen and Vivek Sharma (Computational Bioenergetics Group).
The membrane-supercomplex architecture provides a unique tubular structure to mitochondria of Tetrahymena thermophila, and serves its specialized functional requirements.
Structural basis of mitochondrial membrane bending by the I-II-III2-IV2 supercomplex
Structural basis of mitochondrial membrane bending by I-II-III2-IV2 supercomplex