Two novel missense mutations in the cystathionine beta-synthase gene in homocystinuric patients
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In Vivo Modeling of the Morbid Human Genome using Danio rerio
Published on: August 24, 2013
L A Kluijtmans1, H J Blom, G H Boers
1Department of Paediatrics, University Hospital Nijmegen, The Netherlands.
Abstract:
Direct sequencing of the coding region of the cystathionine beta-synthase (CBS) gene in two homocystinuric patients revealed the presence of two novel missense mutations. The first mutation, a 1111G-->A transition, resulted in the substitution of the evolutionary conserved valine-371 by a methionine residue (V371M) and created a new NlaIII restriction site. The second mutation, a G-->A transition at base-pair 494, resulted in an amino acid change from cysteine to tyrosine (C165Y) and abolished a BsoFI restriction site. Both mutations were found in a compound heterozygous state with the previously described 833T-->C transition.
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