4-hydroxy-4-methyl-2-oxoglutarate aldolase activity
4-hydroxy-4-methyl-2-oxoglutarate aldolase activity
4-hydroxy-4-methyl-2-oxoglutarate pyruvate-lyase (pyruvate-forming)
4-hydroxy-4-methyl-2-oxoglutarate pyruvate-lyase (pyruvate-forming)