A directed change in
translational reading frames that allows the production of a single
protein from two or more overlapping
genes. The process is programmed by the
nucleotide sequence of the
mRNA and is sometimes also affected by the secondary or tertiary mRNA structure. It has been described mainly in
viruses (especially
retroviruses;
retrotransposons; and bacterial insertion elements but also in some cellular genes.
Notably the p19 tumor suppressor gene in humans encodes a frameshift.
See also
Frameshift mutation
External links