This enzyme belongs to the family of lyases, specifically the oxo-acid-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is 4-hydroxy-2-oxoglutarate glyoxylate-lyase (pyruvate-forming). Other names in common use include 2-oxo-4-hydroxyglutarate aldolase, hydroxyketoglutaric aldolase, 4-hydroxy-2-ketoglutaric aldolase, 2-keto-4-hydroxyglutaric aldolase, 4-hydroxy-2-ketoglutarate aldolase, 2-keto-4-hydroxyglutarate aldolase, 2-oxo-4-hydroxyglutaric aldolase, DL-4-hydroxy-2-ketoglutarate aldolase, hydroxyketoglutarate aldolase, 2-keto-4-hydroxybutyrate aldolase, and 4-hydroxy-2-oxoglutarate glyoxylate-lyase. This enzyme participates in arginine and proline metabolism and glyoxylate and dicarboxylate metabolism.
KURATOMI K, FUKUNAGA K (1963). "The metabolism of γ-hydroxyglutamate in rat liver I. Enzymic synthesis of γ-hydroxy-α-ketoglutarate from pyruvate and glyoxylate". Biochim. Biophys. Acta. 78 (4): 617–28. doi:10.1016/0006-3002(63)91027-8. PMID14089442.
Lane RS, Shapley A, Dekker EE (1971). "2-keto-4-hydroxybutyrate aldolase. Identification as 2-keto-4-hydroxyglutarate aldolase, catalytic properties, and role in the mammalian metabolism of L-homoserine". Biochemistry. 10 (8): 1353–64. doi:10.1021/bi00784a013. PMID5580656.
Nishihara H, Dekker EE (1972). "Purification, substrate specificity and binding, -decarboxylase activity, and other properties of Escherichia coli 2-keto-4-hydroxyglutarate aldolase". J. Biol. Chem. 247 (16): 5079–87. PMID4560498.
Boyer, P.D. (Ed.), The Enzymes, 3rd ed., vol. 7, Academic Press, New York, 1972, p. 281-302.