J 2019

A role for the Saccharomyces cerevisiae ABCF protein New1 in translation termination/recycling

KASARI, V., A.A. POCHOPIEN, T. MARGUS, V. MURINA, K. TURNBULL et. al.

Basic information

Original name

A role for the Saccharomyces cerevisiae ABCF protein New1 in translation termination/recycling

Authors

KASARI, V., A.A. POCHOPIEN, T. MARGUS, V. MURINA, K. TURNBULL, Y. ZHOU, T. NISSAN, M. GRAF, Jiří NOVÁČEK (203 Czech Republic, guarantor, belonging to the institution), G.C. ATKINSON, M.J.O. JOHANSSON, D.N. WILSON and V. HAURYLIUK

Edition

Nucleic acids research, Oxford, Oxford University Press, 2019, 0305-1048

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10608 Biochemistry and molecular biology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 11.502

RIV identification code

RIV/00216224:14740/19:00113325

Organization unit

Central European Institute of Technology

UT WoS

000490576900040

Keywords in English

MESSENGER-RNA DECAY; INITIATION-FACTOR; GENE ONTOLOGY; YEAST; ELONGATION; COMPLEX; VISUALIZATION; PURIFICATION; BIOGENESIS; EXPRESSION

Tags

Tags

International impact, Reviewed
Změněno: 27/10/2024 14:05, Ing. Martina Blahová

Abstract

V originále

Translation is controlled by numerous accessory proteins and translation factors. In the yeast Saccharomyces cerevisiae, translation elongation requires an essential elongation factor, the ABCF ATPase eEF3. A closely related protein, New1, is encoded by a non-essential gene with cold sensitivity and ribosome assembly defect knock-out phenotypes. Since the exact molecular function of New1 is unknown, it is unclear if the ribosome assembly defect is direct, i.e. New1 is a bona fide assembly factor, or indirect, for instance due to a defect in protein synthesis. To investigate this, we employed yeast genetics, cryo-electron microscopy (cryo-EM) and ribosome profiling (Ribo-Seq) to interrogate the molecular function of New1. Overexpression of New1 rescues the inviability of a yeast strain lacking the otherwise strictly essential translation factor eEF3. The structure of the ATPase-deficient (EQ(2)) New1 mutant locked on the 80S ribosome reveals that New1 binds analogously to the ribosome as eEF3. Finally, Ribo-Seq analysis revealed that loss of New1 leads to ribosome queuing upstream of 3'-terminal lysine and arginine codons, including those genes encoding proteins of the cytoplasmic translational machinery. Our results suggest that New1 is a translation factor that fine-tunes the efficiency of translation termination or ribosome recycling.

Links

90043, large research infrastructures
Name: CIISB