Abstract
Understanding the structure of the ribosomal complexes is critical for elucidating the mechanisms of translation, and scientists have been working for decades toward this goal. Cross-linking and footprinting were among the first methods used to probe the interactions of translation factors with the ribosome and the structures of ribosomal complexes. Since publication of the first high-resolution structures, these methods have continued to provide valuable structural information, while complementing and building on results from X-ray crystallography and Cryo-electron microscopy (Cryo-EM). The aim of this chapter is to provide descriptions of the diverse group of experimental methods that yield information about the structure of ribosomal complexes, without being methods for structure determination per se. Biochemical and biophysical methods that provide information about the binding of proteins but not about their ribosomal position will not be discussed, while X-ray crystallography and Cryo-EM are described in Chaps. 1 and 2, respectively. Special emphasis is given to directed hydroxyl radical probing, since this approach can provide not only information about the overall binding site of a translation factor, but also provide low-resolution models for the structure of a complex with the ribosome.
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Abbreviations
- 4-thioU:
-
4-Thiouracil
- 5′-UTR:
-
5′-Untranslated region
- 6-thioG:
-
6-Thioguanine
- Cryo-EM:
-
Cryo-electron microscopy
- CTD:
-
C-terminal domain
- CTT:
-
C-terminal tail
- dsRNA:
-
Double-stranded RNA
- eIF:
-
Eukaryotic translation initiation factor
- E-site:
-
Exit site
- Fe(II)-BABE:
-
Fe(II) 1-(p-bromoacetamidobenzyl)-EDTA
- FRET:
-
Fluorescence resonance energy transfer
- IRES:
-
Internal ribosome entry site
- NTD:
-
N-terminal domain
- NTT:
-
N-terminal tail
- OB-fold:
-
Oligonucleotide/oligosaccharide binding fold
- P-site:
-
Peptidyl-tRNA site
- Ribosomal A-site:
-
Ribosomal aminoacyl-tRNA site
- rRNA:
-
Ribosomal RNA
- RT:
-
Reverse transcriptase
- ssRNA:
-
Single-stranded RNA
- tRNA:
-
Transfer RNA
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This work was supported by a Howard Temin award K01 CA119107 from the NCI.
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Marintchev, A. (2012). Methods for Studying the Interactions of Translation Factors with the Ribosome. In: Dinman, J. (eds) Biophysical approaches to translational control of gene expression. Biophysics for the Life Sciences, vol 1. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-3991-2_5
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