Triosephosphate isomerase deficiency

a neurodegenerative misfolding disease.

J. Oláh, F. Orosz, György M. Keserü, Zoltán Kovári, J. Kovács, S. Hollán, J. Ovádi

Research output: Article

48 Citations (Scopus)

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 (Phe(240)-->Leu and Glu(145)-->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 fluores cence 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.

Original languageEnglish
Pages (from-to)30-38
Number of pages9
JournalBiochemical Society Transactions
Volume30
Issue number2
Publication statusPublished - ápr. 2002

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Triose-Phosphate Isomerase
Neurodegenerative diseases
Neurodegenerative Diseases
Mutation
Enzymes
Isomerases
Immunoelectron Microscopy
Terminator Codon
Hemolytic Anemia
Heterozygote
Nervous System Diseases
Thermodynamics
Germ Cells
Computer Simulation
Spectrum Analysis
Enzyme activity
Phenotype
Triosephosphate Isomerase Deficiency
Microscopic examination
Blood

ASJC Scopus subject areas

  • Biochemistry

Cite this

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title = "Triosephosphate isomerase deficiency: a neurodegenerative misfolding disease.",
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 (Phe(240)-->Leu and Glu(145)-->stop codon) mutations. We have demonstrated recently [Orosz, Ol{\'a}h, Alvarez, Keser{\"u}, Szab{\'o}, W{\'a}gner, Kov{\'a}ri, Hor{\'a}nyi, Bar{\'o}ti, Martial, Holl{\'a}n and Ov{\'a}di (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 fluores cence 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.",
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T2 - a neurodegenerative misfolding disease.

AU - Oláh, J.

AU - Orosz, F.

AU - Keserü, György M.

AU - Kovári, Zoltán

AU - Kovács, J.

AU - Hollán, S.

AU - Ovádi, J.

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