Use of host-like peptide motifs in viral proteins is a prevalent strategy in host-virus interactions
- PMID: 24882001
- PMCID: PMC4089993
- DOI: 10.1016/j.celrep.2014.04.052
Use of host-like peptide motifs in viral proteins is a prevalent strategy in host-virus interactions
Abstract
Viruses interact extensively with host proteins, but the mechanisms controlling these interactions are not well understood. We present a comprehensive analysis of eukaryotic linear motifs (ELMs) in 2,208 viral genomes and reveal that viruses exploit molecular mimicry of host-like ELMs to possibly assist in host-virus interactions. Using a statistical genomics approach, we identify a large number of potentially functional ELMs and observe that the occurrence of ELMs is often evolutionarily conserved but not uniform across virus families. Some viral proteins contain multiple types of ELMs, in striking similarity to complex regulatory modules in host proteins, suggesting that ELMs may act combinatorially to assist viral replication. Furthermore, a simple evolutionary model suggests that the inherent structural simplicity of ELMs often enables them to tolerate mutations and evolve quickly. Our findings suggest that ELMs may allow fast rewiring of host-virus interactions, which likely assists rapid viral evolution and adaptation to diverse environments.
Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.
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