Summary
l-2-hydroxyglutaric aciduria is a metabolic disorder in which l-2-hydroxyglutarate accumulates as a result of a deficiency in FAD-linked l-2-hydroxyglutarate dehydrogenase, a mitochondrial enzyme converting l-2-hydroxyglutarate to α-ketoglutarate. The origin of the l-2-hydroxyglutarate, which accumulates in this disorder, is presently unknown. The oxidation–reduction potential of the 2-hydroxyglutarate/α-ketoglutarate couple is such that l-2-hydroxyglutarate could potentially be produced through the reduction of α-ketoglutarate by a NAD- or NADP-linked oxidoreductase. In fractions of rat liver cytosolic extracts that had been chromatographed on an anion exchanger we detected an enzyme reducing α-ketoglutarate in the presence of NADH. This enzyme co-purified with cytosolic l-malate dehydrogenase (cMDH) upon further chromatography on Blue Sepharose. Mitochondrial fractions also contained an NADH-linked, ‘α-ketoglutarate reductase’ which similarly co-purified with mitochondrial l-malate dehydrogenase (mMDH). Purified mMDH catalysed the reduction of α-ketoglutarate to l-2-hydroxyglutarate with a catalytic efficiency that was about 107-fold lower than that observed with oxaloacetate. For the cytosolic enzyme, this ratio amounted to 108, indicating that this enzyme is more specific. Both cMDH and mMDH are highly active in tissues and α-ketoglutarate is much more abundant than oxaloacetate and more concentrated in mitochondria than in the cytosol. As a result of this, the weak activity of mMDH on α-ketoglutarate is sufficient to account for the amount of l-2-hydroxyglutarate that is excreted by patients deficient in FAD-linked l-2-hydroxyglutarate dehydrogenase. The latter enzyme appears, therefore, to be responsible for a ‘metabolite repair’ phenomenon and to belong to the expanding class of ‘house-cleaning’ enzymes.
Similar content being viewed by others
References
Achouri Y, Noël G, Vertommen D, Rider MH, Veiga-da-Cunha M, Van Schaftingen E (2004) Identification of a dehydrogenase acting on d-2-hydroxyglutarate. Biochem J 381: 35–42.
Amar-Costesec A, Beaufay H, Wibo M, et al (1974) Analytical study of microsomes and isolated subcellular membranes from rat liver. II. Preparation and composition of the microsomal fraction. J Cell Biol 61: 201–212.
Barth PG, Hoffmann GF, Jaeken J, et al. (1992) l-2-hydroxyglutaric acidemia: a novel inherited neurometabolic disease. Ann Neurol 32: 66–71.
Barth PG, Hoffmann GF, Jaeken J, et al (1993) l-2-hydroxyglutaric acidaemia: clinical and biochemical findings in 12 patients and preliminary report on l-2-hydroxyacid dehydrogenase. J Inherit Metab Dis 16: 753–761.
Bertocci LA, Lujan BF (1999) Incorporation and utilization of [3-13C]lactate and [1,2-13C]acetate by rat skeletal muscle. J Appl Physiol 86: 2077–2089.
Bradford MM (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein–dye binding. Anal Biochem 72: 245–248.
Buckel W, Miller SL (1987) Equilibrium constants of several reactions involved in the fermentation of glutamate. Eur J Biochem 164: 565–569.
Chen E, Nyhan WL, Jakobs C, et al (1996) l-2-Hydroxyglutaric aciduria: neuropathological correlations and first report of severe neurodegenerative disease and neonatal death. J Inherit Metab Dis 19: 335–343.
Clarke S (2003) Aging as war between chemical and biochemical processes: protein methylation and the recognition of age-damaged proteins for repair. Ageing Res Rev 2: 263–285.
Davies DD, Kun E (1957) Isolation and properties of malic dehydrogenase from ox-heart mitochondria. Biochem J 66: 307–316.
de Duve C, Pressman BC, Gianetto R, Wattiaux R, Appelmans F (1955) Tissue fractionation studies 6. Intracellular distribution patterns of enzymes in rat-liver tissue. Biochem J 60: 604–617.
Delpierre G, Vanstapel F, Stroobant V, Van Schaftingen E (2000) Conversion of a synthetic fructosamine into its 3-phospho derivative in human erythrocytes. Biochem J 352: 835–839.
Delpierre G, Collard F, Fortpied J, Van Schaftingen E (2002) Fructosamine 3-kinase is involved in an intracellular deglycation pathway in human erythrocytes. Biochem J 365: 801–808.
Duran M, Kamerling JP, Bakker HD, van Gennip AH, Wadman SK (1980) l-2-Hydroxyglutaric aciduria: an inborn error of metabolism? J Inherit Metab Dis 3: 109–112.
Galperin MY, Moroz OV, Wilson KS, Murzin AG (2006) House cleaning, a part of good housekeeping. Mol Microbiol 59: 5–19.
Graupner M, Xu H, White RH (2000) Identification of an archaeal 2-hydroxy acid dehydrogenase catalyzing reactions involved in coenzyme biosynthesis in methanoarchaea. J Bacteriol 182: 3688–3692.
Hung HC, Kuo MW, Chang GG, Liu GY (2005) Characterization of the functional role of allosteric site residue Asp102 in the regulatory mechanism of human mitochondrial NAD(P)+-dependent malate dehydrogenase (malic enzyme). Biochem J 392: 39–45.
Ljunggren B, Ratcheson RA, Siesjo BK (1974) Cerebral metabolic state following complete compression ischemia. Brain Res 73: 291–307.
Lowenson JD, Kim E, Young SG, Clarke S (2001) Limited accumulation of damaged proteins in l-isoaspartyl (d-aspartyl) O-methyltransferase-deficient mice. J Biol Chem 276: 20695–20702.
Moskovitz J (2005) Roles of methionine sulfoxide reductases in antioxidant defense, protein regulation and survival. Curr Pharm Des 11: 1451–1457.
O’Donnell JM, Doumen C, LaNoue KF, et al (1998) Dehydrogenase regulation of metabolite oxidation and efflux from mitochondria in intact hearts. Am J Physiol 274: H467–476.
Reeves HC, Ajl SJ (1962) Alpha-hydroxyglutaric acid synthetase. J Bacteriol 84: 186–187.
Phillips SA, Thornalley PJ (1993) The formation of methylglyoxal from triose phosphates. Investigation using a specific assay for methylglyoxal. Eur J Biochem 212: 101–105.
Richard JP (1991) Kinetic parameters for the elimination reaction catalyzed by triosephosphate isomerase and an estimation of the reaction’s physiological significance. Biochemistry 30: 4581–4585.
Rzem R, Veiga-da-Cunha M, Noël G, et al (2004) A gene encoding a putative FAD-dependent l-2-hydroxyglutarate dehydrogenase is mutated in l-2-hydroxyglutaric aciduria. Proc Natl Acad Sci USA 101: 16849–16854.
Rzem R, Van Schaftingen E, Veiga-da-Cunha M (2006) The gene mutated in l-2-hydroxyglutaric aciduria encodes l-2-hydroxyglutarate dehydrogenase. Biochimie 88: 113–116.
Schatz L, Segal HL (1969) Reduction of alpha-ketoglutarate by homogeneous lactic dehydrogenase X of testicular tissue. J Biol Chem 244: 4393–4397.
Soboll S, Horst C, Hummerich H, Schumacher JP, Seitz HJ (1992) Mitochondrial metabolism in different thyroid states. Biochem J 281: 171–173.
Solow BT, White RH (1997) Absolute stereochemistry of 2-hydroxyglutaric acid present in methanopterin. Chirality 9: 678–680.
Topçu M, Jobard F, Halliez S, (2004) l-2-Hydroxyglutaric aciduria: identification of a mutant gene C14orf160, localized on chromosome 14q22.1. Hum Mol Genet 13: 2803–2811.
Tsuzuki T, Egashira A, Igarashi H, et al (2001) Spontaneous tumorigenesis in mice defective in the MTH1 gene encoding 8-oxo-dGTPase. Proc Natl Acad Sci USA 98: 11456–11461.
Veiga-da-Cunha M, Jacquemin P, Delpierre G, et al (2006) Increased protein glycation in fructosamine-3-kinase deficient mice. Biochem J 399: 257–264.
Vilarinho L, Cardoso ML, Gaspar P, et al (2005) Novel L2HGDH mutations in 21 patients with l-2-hydroxyglutaric aciduria of Portuguese origin. Hum Mutat 26: 395–396.
Weil-Malherbe H (1937) The oxidation of l(-)α-hydroxyglutaric acid in animal tissues. Biochem J 31: 2080–2094.
Williamson DH, Lund P, Krebs HA (1967) The redox state of free nicotinamide–adenine dinucleotide in the cytoplasm and mitochondria of rat liver. Biochem J 103: 514–527.
Wiseman MS, McKay D, Crow KE, Hardman MJ (1991) Rat liver mitochondrial malate dehydrogenase: purification, kinetic properties, and role in ethanol metabolism. Arch Biochem Biophys 290: 191–196.
Wright SK, Viola RE (2001) Alteration of the specificity of malate dehydrogenase by chemical modulation of an active site arginine. J Biol Chem 276: 31151–31155.
Yamamoto A, Takagi H, Kitamura D, et al (1998) Deficiency in protein l-isoaspartyl methyltransferase results in a fatal progressive epilepsy. J Neurosci 18: 2063–2074.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicating editor: Michael Gibson
Competing interests: None declared
References to electronic databases: l-2-Hydroxyglutaric aciduria: OMIM 236792
Rights and permissions
About this article
Cite this article
Rzem, R., Vincent, MF., Van Schaftingen, E. et al. l-2-Hydroxyglutaric aciduria, a defect of metabolite repair. J Inherit Metab Dis 30, 681–689 (2007). https://doi.org/10.1007/s10545-007-0487-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10545-007-0487-0