Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 28, Issue 5, Pages 259-266Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S0968-0004(03)00066-5
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During the decoding process, tRNA selection by the ribosome is far more accurate than expected from codon-anticodon pairing. Antibiotics such as streptomycin and paromomycin have long been known to increase the error rate of translation, and many mutations that increase or lower accuracy have been characterized. Recent crystal structures show that the specific recognition of base-pairing geometry leads to a closure of the domains of the small subunit around cognate tRNA. This domain closure is likely to trigger subsequent steps in tRNA selection. Many antibiotics and mutations act by making the domain closure more or less favourable. In conjunction with recent cryoelectron microscopy structures of the ribosome, a comprehensive structural understanding of the decoding process is beginning to emerge.
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