Skip to main content Accessibility help
×
Home

A branch site mutation leading to aberrant splicing of the human tyrosine hydroxylase gene in a child with a severe extrapyramidal movement disorder

  • R. J. R. J. JANSSEN (a1), R. A. WEVERS (a1), M. HÄUSSLER (a2), J. A. F. M. LUYTEN (a1), G. C. H. STEENBERGEN-SPANJERS (a1), G. F. HOFFMANN (a3), T. NAGATSU (a4) and L. P. W. J. VAN DEN HEUVEL (a1)...

Abstract

We report a branch site mutation in the gene of the enzyme tyrosine hydroxylase (TH): a −24t > a substitution two bases upstream of the adenosine in the branchpoint sequence (BPS) of intron 11. As normal lariat formation is therefore prevented, alternative splicing takes place: use of the BPS of intron 12 results in skipping of exon 12, whereas the use of a cryptic branch site in intron 11 leads to partial retention of this intron in the mRNA. This leads in both cases to an aberrant protein product. In the one case, skipping of exon 12 results in the absence of 32 amino acids. In the other, retention of 36 nucleotides of intron 11 in the mRNA results in the incorporation of twelve additional amino acids. The functional consequences of this mutation for the patient, who is also heterozygous for another previously identified mutation, become apparent in a severe clinical phenotype.

Copyright

Corresponding author

Correspondence: R. A. Wevers, PhD, University Medical Centre Nijmegen, 319 Laboratory of Neurology, PO Box 9101, 6500 HB Nijmegen, The Netherlands. Fax: +31 24 3540297. E-mail: r.wevers@ckslkn.azn.nl

A branch site mutation leading to aberrant splicing of the human tyrosine hydroxylase gene in a child with a severe extrapyramidal movement disorder

  • R. J. R. J. JANSSEN (a1), R. A. WEVERS (a1), M. HÄUSSLER (a2), J. A. F. M. LUYTEN (a1), G. C. H. STEENBERGEN-SPANJERS (a1), G. F. HOFFMANN (a3), T. NAGATSU (a4) and L. P. W. J. VAN DEN HEUVEL (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed