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| Content Provider | Springer Nature Link |
|---|---|
| Author | Khairulina, Yu. S. Molotkov, M. V. Bulygin, K. N. Graifer, D. M. Ven’yamiva, A. G. Frolova, L. Yu. Stahl, J. Karpova, G. G. |
| Copyright Year | 2008 |
| Abstract | Protein S3 fragments were determined that crosslink to modified mRNA analogues in positions +5 to +12 relative to the first nucleotide in the P-site bound codon in model complexes mimicking states of ribosomes at the elongation and translation termination steps. The mRNA analogues contained a Phe codon UUU/UUC at the 5′-termini that could predetermine the position of the tRNA$^{Phe}$ on the ribosome by the P-site binding and perfluorophenylazidobenzoyl group at a nucleotide in various positions 3′ of the UUU/UUC codon. The crosslinked S3 protein was isolated from 80S ribosomal complexes irradiated with mild UV light and subjected to cyanogen bromide—induced cleavage at methionine residues with subsequent identification of the crosslinked oligopeptides. An analysis of the positions of modified oligopeptides resulting from the cleavage showed that, in dependence on the positions of modified nucleotides in the mRNA analogue, the crosslinking sites were found in the N-terminal half of the protein (fragment 2–217) and/or in the C-terminal fragment 190–236; the latter reflects a new peculiarity in the structure of the mRNA binding center in the ribosome, unknown to date. The results of crosslinking did not depend on the type of A-site codon or on the presence of translation termination factor eRF1. |
| Starting Page | 691 |
| Ending Page | 697 |
| Page Count | 7 |
| File Format | |
| ISSN | 10681620 |
| Journal | Russian Journal of Bioorganic Chemistry |
| Volume Number | 34 |
| Issue Number | 6 |
| e-ISSN | 1608330X |
| Language | English |
| Publisher | SP MAIK Nauka/Interperiodica |
| Publisher Date | 2008-11-22 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | ribosome photoaffinity cross-linking eukaryotes mRNA analogue mRNA binding site ribosomal protein S3 Biomedicine general Organic Chemistry Bioorganic Chemistry Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Biochemistry |
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