Learning to Live Together: Mutualism Between Self-splicing Introns and Their Hosts

Overview

Journal BMC Biol

Publisher Biomed Central

Specialty Biology

Date 2011 Apr 13

PMID 21481283

Citations 40

Authors

David R Edgell

Venkata R Chalamcharla

Marlene Belfort

Affiliations

Soon will be listed here.

Abstract

Group I and II introns can be considered as molecular parasites that interrupt protein-coding and structural RNA genes in all domains of life. They function as self-splicing ribozymes and thereby limit the phenotypic costs associated with disruption of a host gene while they act as mobile DNA elements to promote their spread within and between genomes. Once considered purely selfish DNA elements, they now seem, in the light of recent work on the molecular mechanisms regulating bacterial and phage group I and II intron dynamics, to show evidence of co-evolution with their hosts. These previously underappreciated relationships serve the co-evolving entities particularly well in times of environmental stress.

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