An error in dystrophin mRNA processing in golden retriever muscular dystrophy, an animal homologue of Duchenne muscular dystrophy
AuthorSharp, N. J. H.
Kornegay, J. N.
Van Camp, S. D.
Herbstreith, M. H.
Secore, S. L.
Hung, W. -Y
Constantinou-Deltas, Constantinos D.
Dykstra, M. J.
Roses, A. D.
Bartlett, R. J.
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Golden retriever muscular dystrophy (GRMD) is a spontaneous, X-linked, progressively fatal disease of dogs and is also a homologue of Duchenne muscular dystrophy (DMD). Two-thirds of DMD patients carry detectable deletions in their dystrophin gene in normal and GRMD dogs has failed to demonstrate any detectable loss of exons. Here, we have demonstrated a RNA processing error in GRMD that results from a single base change in the 3′ consensus splice site of intron 6. The seventh exon is then skipped, which predicts a termination of the dystrophin reading frame within its N-terminal domain in exon 8. This is the first example of dystrophin deficiency caused by a splice-site mutation. © 1992.
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