Báo cáo Y học: Novel complexes of mammalian translation elongation factor eEF1AÆGDP with uncharged tRNA and aminoacyl-tRNA synthetase

Novel Complexes of Mammalian Translation Elongation Factor eEF1A-GDP with Uncharged tRNA and Aminoacyl-tRNA Synthetase: Implications for tRNA Channeling

Authors: Zoya M. Petrushenko, Tatyana V. Budkevich, Vyacheslav F. Shalak, Boris S. Negrutskii, and Anna V. El’skaya

Field: Molecular Biology and Genetics

Document Content: This study investigates the formation and stability of novel ternary ([eEF1A·GDP·tRNA]) and quaternary ([eEF1A·GDP·tRNAPhe·PheRS]) complexes involving the mammalian translation elongation factor eEF1A, uncharged tRNA, and aminoacyl-tRNA synthetase (PheRS). These complexes are proposed to play a role in tRNA channeling during protein synthesis. The research utilized gel-retardation and surface plasmon resonance techniques to demonstrate the association and estimate the dissociation constants of these complexes. Findings suggest that these stable complexes could contribute to the efficiency of the translation elongation cycle by facilitating the vectorial transfer of tRNA.

Detailed Table of Contents:

• Introduction
• Materials and Methods
• Results and Discussion
• Stability of the [eEF1A·GDP/GMP-PNP·tRNA] complexes
• Specific association of the [eEF1A·GDP·tRNA] complex with PheRS
• Stability of the quaternary [eEF1A·GDP·tRNAPhe·PheRS] complex
• Vectorial transfer of tRNA/aminoacyl-tRNA during mammalian translation elongation cycle
• Acknowledgments
• References