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- W4248676283 abstract "A number of neurodegenerative diseases are mediated by mutation-induced protein misfolding. The resulting genetic defects, however, are expressed in varying phenotypes. Of the several well-established glycolytic enzyme deficiencies, triosephosphate isomerase (TPI) deficiency is the only one in which haemolytic anaemia is coupled with progressive, severe neurological disorder. In a Hungarian family with severe decrease in TPI activity, two germ line-identical but phenotypically differing compound heterozygote brothers inherited two independent (Phe240 → Leu and Glu145 → stop codon) mutations. We have demonstrated recently [Orosz, Oláh, Alvarez, Keserü, Szabó, Wágner, Kovári, Horányi, Baróti, Martial, Hollán and Ovádi (2001) Blood 98, 3106–3112] that the mutations of TPI explain in themselves neither the severe decrease in the enzyme activity characteristic of TPI deficiency nor the enhanced ability of the mutant enzyme from haemolysate of the propositus to associate with subcellular particles. Here we present kinetic (flux analysis), thermodynamic (microcalorimetry and fluorescence spectroscopy), structural (in silico) and ultrastructural (immunoelectron microscopy) data for characterization of mutant isomerase structures and for the TPI-related metabolic processes in normal and deficient cells. The relationships between mutation-induced TPI misfolding and formation of aberrant protein aggregates are discussed." @default.
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- W4248676283 date "2001-04-01" @default.
- W4248676283 modified "2023-10-17" @default.
- W4248676283 title "Triosephosphate isomerase deficiency: a neurodegenerative misfolding disease" @default.
- W4248676283 doi "https://doi.org/10.1042/0300-5127:0300030" @default.
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