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- W1998289211 abstract "In Caucasians, from 4 to 35% of hereditary hemochromatosis (HH) patients carry a least one chromosome without a common assigned HFE mutation (i.e., C282Y, H63D, and S65C). We have undertaken a D-HPLC scanning of the HFE coding region in such patients in order to identify uncommon mutations liable to explain their high transferrin saturation level. Twenty HH patients from Brittany carrying at least one chromosome without an assigned mutation were selected on the basis of a transferrin saturation level with the following threshold: > or = 60% in men and > or = 50% in women, in the absence of other known causes of iron disorders. This strategy allowed us to detect a heterozygous sequence variant in exon 4 of the HFE gene from one individual who was also heterozygous for C282Y. Subsequent DNA sequencing analysis identified an adenine to cytosine transversion at position 848 which changes amino acid 283 from glutamine to proline (Q283P). Family study revealed a clear association between the C282Y/Q283P compound heterozygote genotype and the development of HH. Molecular modeling studies are in favor of a destabilizing effect of the Q283P mutation on the tertiary structure of the HFE protein. This is the first report of a natural protein variant describing the introduction of a proline in a central beta-strand position. Our approach may have practical implications in screening strategies for hereditary hemochromatosis, molecular diagnosis, and HFE structure-function relationships." @default.
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- W1998289211 date "2003-05-01" @default.
- W1998289211 modified "2023-10-02" @default.
- W1998289211 title "Phenotypic expression of the C282Y/Q283P compound heterozygosity in HFE and molecular modeling of the Q283P mutation effect" @default.
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- W1998289211 doi "https://doi.org/10.1016/s1079-9796(03)00036-6" @default.
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