Post-translational N-terminal Arginylation of Protein Fragments: A Pivotal Portal to Proteolysis.

Abstract:

:The majority of tRNA studies has focused on tRNA molecules as pivotal player in the fundamental process of protein synthesis. Mounting studies have unveiled further functions for tRNA beyond protein synthesis, including non-ribosomal amino acid transfer, and regulation of targeted proteolysis. Post-translational N-terminal arginylation of protein fragments, a non-ribosomal amino acid transfer, is one of the crucial ways by which tRNA participates in various protein degradation trajectories and influences global cellular functions. Previous studies demonstrated a role of arginylation by arginyltransferases (ATEs) in protein degradation, autophagy, and cell death in mammalian cells. Notably, recent investigations in plants have revealed some of the crucial aspects regarding the biochemical nature of Nterminal arginylation and some of its physiological roles. Herein, we review some of the key data on Nterminal arginylation of protein fragments with respect to targeted proteolysis in mammalian cells. Future mechanistic studies using state of the art approaches and physiologically-relevant cellular models are warranted to enhance our molecular understanding of this important yet enigmatic protein modification.

journal_name

Curr Protein Pept Sci

authors

Eldeeb MA,Ragheb MA

doi

10.2174/1389203719666180809113122

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

1214-1223

issue

12

eissn

1389-2037

issn

1875-5550

pii

CPPS-EPUB-92290

journal_volume

19

pub_type

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