The small ribosomal subunit performs the decoding of genetic information during translation. The structure of that from Thermus thermophilus shows that the decoding center, which positions mRNA and three tRNAs, is constructed entirely of RNA. The entrance to the mRNA channel will encircle the message when a latch-like contact closes and contributes to processivity and fidelity ...
The small ribosomal subunit performs the decoding of genetic information during translation. The structure of that from Thermus thermophilus shows that the decoding center, which positions mRNA and three tRNAs, is constructed entirely of RNA. The entrance to the mRNA channel will encircle the message when a latch-like contact closes and contributes to processivity and fidelity. Extended RNA helical elements that run longitudinally through the body transmit structural changes, correlating events at the particle's far end with the cycle of mRNA translocation at the decoding region. 96% of the nucleotides were traced and the main fold of all proteins was determined. The latter are either peripheral or appear to serve as linkers. Some may assist the directionality of translocation.
Related Citations:
Refining the overall structure and subdomain orientation of ribosomal protein S4 delta 41 with dipolar couplings measured by nmr in uniaxial liquid crystalline phases MARKUS, M.A., GERSTNER, R.B., DRAPER, D.E., Torchia, D.A. (1999) J Mol Biol 292: 375
The structure of ribosomal protein s5 reveals sites of interaction with 16S rRNA RAMAKRISHNAN, V., WHITE, S.W. (1992) Nature 358: 768
Crystal structure of the ribosomal protein S6 from Thermus thermophilus LINDAHL, M., SVENSSON, L.A., LILJAS, A., SEDELNIKOVA, S.E., ELISEIKINA, I.A., FOMENKOVA, N.P., NEVSKAYA, N., NIKONOV, S.V., GARBER, M.B., MURANOVA, T.A., RYKONOVA, A.I. (1994) EMBO J 13: 1249
The structure of ribosomal protein S7 at 1.9 A resolution reveals a beta-hairpin motif that binds double-stranded nucleic acids WIMBERLY, B.T., WHITE, S.W., RAMAKRISHNAN, V. (1997) Structure 15: 1187
Crystal structure of ribosomal protein S8 from Thermus thermophilus reveals a high degree of structural conservation of a specific RNA binding site NEVSKAYA, N., TISHCHENKO, S., NIKULIN, A., AL-KARADAGHI, S., LILJAS, A., EHRESMANN, B., EHRESMANN, C., GARBER, M.B., NIKONOV, S. (1998) J Mol Biol 279: 233
Conformational variability of the N-terminal helix in the structure of ribosomal protein S15 CLEMONS, W.M., DAVIES, C., WHITE, S.W., RAMAKRISHNAN, V. (1998) Structure 6: 429
Structure of the S15, S6, S18-rRNA complex: assembly of the 30S ribosome central domain AGALAROV, S.C., PRASAD, G.S., FUNKE, P.M., STOUT, C.D., WILLIAMSON, J.R. (2000) Science 288: 107
Solution structure of the ribosomal protein S19 from Thermus thermophilus HELGSTRAND, M., RAK, A.V., ALLARD, P., DAVYDOVA, N., GARBER, M.B., HARD, T. (1999) J Mol Biol 292: 1071
Organizational Affiliation:
Max-Planck-Research Unit for Ribosomal Structure, Hamburg, Germany.
Download Mendeley
