Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Ribosomal tolerance and peptide bond formation.

Ada Yonath1

  • 1Department of Structural Biology, The Weizmann Institute, 76100 Rehovot, Israel.

Biological Chemistry
|December 13, 2003
PubMed
Summary

The ribosome, a ribozyme, precisely aligns tRNA for peptide bond formation. Its complex structure guides tRNA movement, ensuring correct chemistry and protein exit.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A small nucleolar RNA dictates the structure and function of translating ribosomes in Leishmania.

Nature communications·2026
Same author

A microRNA generated via lysosomal processing of ribosomal RNA suppresses proinflammatory responses.

Life science alliance·2026
Same author

Structural and molecular basis of specialized translation mediated by the ribosome mRNA-binding channel.

Nature communications·2026
Same author

Purification of ribosomes from human embryonic stem (hES) cells for high-resolution Cryo-EM structural studies.

Frontiers in molecular biosciences·2026
Same author

N<sup>1</sup>-Methylpseudouridine directly modulates translation dynamics.

Nature·2026
Same author

<i>p</i>-Alkoxy-Substituted Anisomycins with Potent Anti-Trypanosomiasis Activity and Expanded Modes of Action.

Journal of medicinal chemistry·2025

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Structural Biology

Background:

  • The ribosome is a complex molecular machine responsible for protein synthesis.
  • Key functional sites within the ribosome, including decoding and peptide bond formation, are primarily composed of ribosomal RNA (rRNA).
  • This rRNA-centric composition supports the classification of the ribosome as a ribozyme.

Purpose of the Study:

  • To elucidate the structural mechanisms by which the ribosome achieves precise alignment of tRNA.
  • To understand the role of ribosomal architecture in facilitating the enzymatic function of peptide bond formation.
  • To investigate how the ribosome guides the passage of tRNA and the nascent polypeptide chain.

Main Methods:

  • Analysis of ribosomal structure and function.
  • Investigation of intermolecular interactions between tRNA and the peptidyl transferase center.
  • Computational modeling of tRNA movement within the ribosome.

Main Results:

  • The decoding and peptide bond formation sites are exclusively rRNA, confirming the ribosome's ribozyme nature.
  • Precise tRNA alignment relies on remote interactions between the tRNA acceptor stem and the peptidyl transferase center.
  • Ribosomal architecture, including symmetry-related regions, directs tRNA's A-to-P site translocation via a spiral rotatory motion.

Conclusions:

  • The ribosome's intricate structure is crucial for its enzymatic activity in protein synthesis.
  • The guided motion of tRNA ensures stereochemically appropriate peptide bond formation.
  • The ribosome's design facilitates the entry of newly synthesized proteins into the exit tunnel.

Related Experiment Videos