Journal
SCIENCE
Volume 322, Issue 5903, Pages 953-956Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1164840
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Funding
- MRC UK
- Wellcome Trust
- Agouron Institute
- Louis-Jeantet Foundation
- Boehringer-Ingelheim fellowship
- Gates-Cambridge fellowship
- Medical Research Council [MC_U105184332] Funding Source: researchfish
- MRC [MC_U105184332] Funding Source: UKRI
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The termination of protein synthesis occurs through the specific recognition of a stop codon in the A site of the ribosome by a release factor ( RF), which then catalyzes the hydrolysis of the nascent protein chain from the P- site transfer RNA. Here we present, at a resolution of 3.5 angstroms, the crystal structure of RF2 in complex with its cognate UGA stop codon in the 70S ribosome. The structure provides insight into how RF2 specifically recognizes the stop codon; it also suggests a model for the role of a universally conserved GGQ motif in the catalysis of peptide release.
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