Crystal structure of the ribosome recycling factor from Escherichia coli.
Kim, K.K., Min, K., Suh, S.W.(2000) EMBO J 19: 2362-2370
- PubMed: 10811627
- DOI: https://doi.org/10.1093/emboj/19.10.2362
- Primary Citation of Related Structures:
1EK8 - PubMed Abstract:
We have determined the crystal structure of the Escherichia coli ribosome recycling factor (RRF), which catalyzes the disassembly of the termination complex in protein synthesis. The L-shaped molecule consists of two domains: a triple-stranded antiparallel coiled-coil and an alpha/beta domain. The coil domain has a cylindrical shape and negatively charged surface, which are reminiscent of the anticodon arm of tRNA and domain IV of elongation factor EF-G. We suggest that RRF binds to the ribosomal A-site through its coil domain, which is a tRNA mimic. The relative position of the two domains is changed about an axis along the hydrophobic cleft in the hinge where the alkyl chain of a detergent molecule is bound. The tRNA mimicry and the domain movement observed in RRF provide a structural basis for understanding the role of RRF in protein synthesis.
Organizational Affiliation:
Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Chinju 660-701, Korea. kim@px1.gsnu.ac.kr