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Detection of missense mutations by single-strand conformational polymorphism (SSCP) analysis in five dysfunctional variants of coagulation factor VII

Takamlya, Osamu, Kemball-Cook, Geoffrey, Martin, David M. A., Cooper, David Neil, von Felten, Arthur, Melll, Esther, Hann, Ian, Prangnell, Dennis R., Lumley, Hllary, Tuddenham, Edward G. D. and McVey, John H. 1993. Detection of missense mutations by single-strand conformational polymorphism (SSCP) analysis in five dysfunctional variants of coagulation factor VII. Human Molecular Genetics 2 (9) , pp. 1355-1359. 10.1093/hmg/2.9.1355

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Abstract

Five unrelated subjects with dysfunctional coagulation factor VII (FVII) were studied In order to Identify missense mutations affecting function. Exons 2 to 8 and the Intron-exon Junctions of their FVIl genes were amplified from peripheral white blood cell DNA by PCR and screened by SSCP analysis. DNA fragments showing aberrant mobility were sequenced. The following mutations were Identified: In case 1 (FVII: C <1%, FVIl:Ag 18%) a heterozygous A to G transltion at nucleotlde 8915 In exon 6 results In the amlno acid substitution Lys-137 to Glu near the C-termlnus of the FVlla llght chaln; In case 2 (FVII: C 7%, FVll:Ag 47%) a heterozygous A to G transltion at nucleotide 7834 In exon 5 results in the substitution of Gin-100 by Arg in the second EGF-like domain; In case 3 (FVll:C 20%, FVIl:Ag 76%) a homozygous G to A transition at nucleotide position 6055 in exon 4 was detected resulting in substitution of Arg-79 by Gin in the first EGF-like domain; in case 5 (FVIl:C 10%, FVIl:Ag 52%) a heterozygous C to T transition at nucleotide position 6054 in exon 4 also results in the substitution of Arg79, but in this case it is replaced by Trp; case 4 (FVll:C <1%, FVIl:Ag 100%) was homozygous for a previously reported mutation (G to A) at nucleotide position 10715 in exon 8, substituting Gin for Arg at position 304 in the protease domain. Cases 1,2 and 5 evidently have additional undetected mutations.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Publisher: Oxford University Press
ISSN: 0964-6906
Last Modified: 04 Jun 2017 06:33
URI: http://orca.cf.ac.uk/id/eprint/62011

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