Can I read A dominant mutation in the COL1A1 gene that substitutes glycine for valine causes recurrent lethal osteogenesis imperfecta on EtoBox?

A dominant mutation in the COL1A1 gene that substitutes glycine for valine causes recurrent lethal osteogenesis imperfecta by Jacky Bonaventure; Lola Cohen-Solal; Catherine Lasselin; Pierre Maroteaux is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is A dominant mutation in the COL1A1 gene that substitutes glycine for valine causes recurrent lethal osteogenesis imperfecta about?

Type I collagen chains of a proband from a family with recurrent lethal osteogenesis imperfecta (OI) migrated as a doublet when submitted to gel electrophoresis. Cyanogen bromide (CNBr) peptide mapping demonstrated that the post-translational over-modifications were initiated in alpha 1ICB7. Chemical cleavage of cDNA-RNA heteroduplexes identified a mismatch in the alpha 1I cDNA; this mismatch was subsequently confirmed by sequencing a 249-bp fragment amplified by the polymerase chain reaction. A G to T transition in the second base of the first codon of exon 41 resulted in the substitution of glycine 802 by valine. This mutation impaired collagen secretion by dermal fibroblasts. The over-modified chains were retained intracellularly and melted at a lower temperature than normal chains. Collagen molecules synthesized by parental fibroblasts had a normal electrophoretic mobility, but hybridization of genomic DNA with allele-specific oligonucleotides revealed the presence of the mutant allele in the mother's leukocytes. The mutation was not detected in her fibroblasts consistent with the protein data. These results support the hypothesis that somatic and germ-line mosaicism in the phe

Who reads A dominant mutation in the COL1A1 gene that substitutes glycine for valine causes recurrent lethal osteogenesis imperfecta?

Author

Jacky Bonaventure; Lola Cohen-Solal; Catherine Lasselin; Pierre Maroteaux

Publisher

Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0340-6717)

Published

1992

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)