Open AccessA cellular handbook for collided ribosomes: surveillance pathways and collision types
Author(s) -
Sezen Meydan,
Nicholas R. Guydosh
Publication year - 2020
Publication title -
current genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.825
H-Index - 81
eISSN - 1432-0983
pISSN - 0172-8083
DOI - 10.1007/s00294-020-01111-w
Subject(s) - ribosome , biology , microbiology and biotechnology , endogeny , ribosome profiling , context (archaeology) , computational biology , protein biosynthesis , messenger rna , proteomics , translation (biology) , genetics , gene , rna , biochemistry , paleontology
Translating ribosomes slow down or completely stall when they encounter obstacles on mRNAs. Such events can lead to ribosomes colliding with each other and forming complexes of two (disome), three (trisome) or more ribosomes. While these events can activate surveillance pathways, it has been unclear if collisions are common on endogenous mRNAs and whether they are usually detected by these cellular pathways. Recent genome-wide surveys of collisions revealed widespread distribution of disomes and trisomes across endogenous mRNAs in eukaryotic cells. Several studies further hinted that the recognition of collisions and response to them by multiple surveillance pathways depend on the context and duration of the ribosome stalling. This review considers recent efforts in the identification of endogenous ribosome collisions and cellular pathways dedicated to sense their severity. We further discuss the potential role of collided ribosomes in modulating co-translational events and contributing to cellular homeostasis.