Deletion of a branch-point consensus sequence in the LMX1B gene causes exon skipping in a family with nail patella syndrome.
Nail patella syndrome (NPS) has been shown to result from loss of function mutations within the transcription factor LMX1B. In a large NPS family a 17 bp intronic deletion encompassing a consensus branchpoint sequence was observed to segregate with the NPS phenotype. RNA analysis demonstrated that deletion of the branchpoint sequence resulted in skipping of the downstream exon. A mechanism to explain this phenomenon is presented.
Hamlington
J D
JD
McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore 21287-4922, USA.
Clough
M V
MV
Dunston
J A
JA
McIntosh
I
I
D017398:Alternative Splicing; D000595:Amino Acid Sequence; D001483:Base Sequence; D002478:Cells, Cultured; D004247:DNA / Q000737:chemistry / Q000235:genetics; D004252:DNA Mutational Analysis; D005091:Exons / Q000235:genetics*; D005192:Family Health; D018398:Homeodomain Proteins / Q000235:genetics*; D006801:Humans; D060850:LIM-Homeodomain Proteins; D008969:Molecular Sequence Data; D009261:Nail-Patella Syndrome / Q000235:genetics*; D012313:RNA / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017384:Sequence Deletion; D014157:Transcription Factors
D018398:Homeodomain Proteins; C112149:LIM homeobox transcription factor 1 beta; D060850:LIM-Homeodomain Proteins; D014157:Transcription Factors; D012313:RNA; D004247:DNA