Characterization of a deletion mutation involving exons 3-7 of the WASP gene detected in a patient with Wiskott-Aldrich syndrome.
A case of Wiskott-Aldrich syndrome (WAS) suspected to have a deletion mutation in the WAS protein (WASP) gene had previously been reported (Ariga et al., 1997). Genomic polymerase chain reaction (PCR) suggested that exons 3-7 of the WASP gene were included in the deletion. Present Southern blot studies confirm that the deletion is approximately 2.0 kb in length, involving exons 3-7 and seemed to have been created by the fusion of introns 2 and 7. To characterize the deletion mutation in detail, we analyzed the PCR-amplified fragments of introns 2 and 7 from normal individuals and the fragment suspected of including the deletion junction from the patient. Sequencing of the patient fragment revealed that the deletion mutation involving exons 3-7 of the WASP gene did, indeed, result from the fusion of introns 2 and 7.
Ariga
T
T
Department of Pediatrics, Hokkaido University School of Medicine, Japan. tada-ari@med.hokudai.ac.jp
Yamada
M
M
Ito
S
S
Iwamura
M
M
Iseki
M
M
Sakiyama
Y
Y
D001483:Base Sequence; D015139:Blotting, Southern; D005091:Exons; D006801:Humans; D007223:Infant; D007438:Introns; D008297:Male; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D011506:Proteins / Q000235:genetics*; D017422:Sequence Analysis, DNA; D017384:Sequence Deletion / Q000235:genetics*; D014923:Wiskott-Aldrich Syndrome / Q000235:genetics*; D051316:Wiskott-Aldrich Syndrome Protein
D011506:Proteins; C495767:WAS protein, human; D051316:Wiskott-Aldrich Syndrome Protein