Download MendeleyStructure and assembly model for the Trypanosoma cruzi 60S ribosomal subunit.
Liu, Z., Gutierrez-Vargas, C., Wei, J., Grassucci, R.A., Ramesh, M., Espina, N., Sun, M., Tutuncuoglu, B., Madison-Antenucci, S., Woolford, J.L., Tong, L., Frank, J.(2016) Proc Natl Acad Sci U S A 113: 12174-12179
- PubMed: 27791004
- DOI: https://doi.org/10.1073/pnas.1614594113
- Primary Citation of Related Structures:
5T5H - PubMed Abstract:
Ribosomes of trypanosomatids, a family of protozoan parasites causing debilitating human diseases, possess multiply fragmented rRNAs that together are analogous to 28S rRNA, unusually large rRNA expansion segments, and r-protein variations compared with other eukaryotic ribosomes. To investigate the architecture of the trypanosomatid ribosomes, we determined the 2.5-Å structure of the Trypanosoma cruzi ribosome large subunit by single-particle cryo-EM. Examination of this structure and comparative analysis of the yeast ribosomal assembly pathway allowed us to develop a stepwise assembly model for the eight pieces of the large subunit rRNAs and a number of ancillary "glue" proteins. This model can be applied to the characterization of Trypanosoma brucei and Leishmania spp. ribosomes as well. Together with other details, our atomic-level structure may provide a foundation for structure-based design of antitrypanosome drugs.
Organizational Affiliation:
Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032.
