Identification of three novel mutations in hereditary protein S deficiency.
Article Details
- CitationCopy to clipboard
Bustorff TC, Freire I, Gago T, Crespo F, David D
Identification of three novel mutations in hereditary protein S deficiency.
Thromb Haemost. 1997 Jan;77(1):21-5.
- PubMed ID
- 9031443 [ View in PubMed]
- Abstract
We report the application of single-stranded conformation polymorphism (SSCP) analysis to the screening of 15 functionally important Protein S (PS) gene (PS alpha) regions (4.243 Kb) in 6 unrelated families with PS deficiencies. Direct sequencing of the fragments with altered migration patterns led to the identification of the corresponding molecular alterations. A missense mutation, G to T transversion at codon Cys598, and two different alterations, leading either to allelic exclusion, or premature termination of the protein translation: a G to A transition at codon Trp465 and a 1 nt (T) insertion at codon 265, were identified. The 1 nt insertion was observed in three apparently unrelated families but with a common geographical origin and the mutated allele was undetectable in platelet mRNAs of affected individuals. Family analysis confirmed, in each case, a perfect cosegregation of the mutation with the PS deficiency. We conclude that these alterations represent the causative mutations.