mRNA surveillance: the perfect persist.
In eukaryotes, an elaborate set of mechanisms has evolved to ensure that the multistep process of gene expression is accurately executed and adapted to cellular needs. The mRNA surveillance pathway works in this context by assessing the quality of mRNAs to ensure that they are suitable for translation. mRNA surveillance facilitates the detection and destruction of mRNAs that contain premature termination codons by a process called nonsense-mediated decay. Moreover, recent studies have shown that a distinct mRNA surveillance process, called nonstop decay, is responsible for depleting mRNAs that lack in-frame termination codons. mRNA surveillance thereby prevents the synthesis of truncated and otherwise aberrant proteins, which can have dominant-negative and other deleterious effects.
Department of Molecular, Cellular and Developmental Biology, University of Colorado-Boulder, Boulder, CO 80309-0347 USA.
Eileen
E
Wagner
Jens
J
Lykke-Andersen
D000818:Animals; D018389:Codon, Nonsense / Q000235:genetics*; D005057:Eukaryotic Cells / Q000166:cytology / Q000378:metabolism*; D005786:Gene Expression Regulation / Q000235:genetics*; D006801:Humans; D014176:Protein Biosynthesis / Q000235:genetics*; D011506:Proteins / Q000235:genetics; D020365:RNA Helicases / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000096:biosynthesis* / Q000235:genetics; D015534:Trans-Activators
D018389:Codon, Nonsense; D011506:Proteins; D012333:RNA, Messenger; D015534:Trans-Activators; D020365:RNA Helicases; C101828:UPF1 protein, human