oxo-acid-lyase activity (4S)-4-hydroxy-2-oxoglutarate aldolase activity 2017-04-25T14:14:58Z GO:0106009 molecular_function hjd RHEA:35639 Catalysis of the reaction:(4S)-4-hydroxy-2-oxoglutarate = pyruvate + glyoxylate. Specific for the (4S) enantiomer of 4-hydroxy-2-oxoglutarate. EC:4.1.3.42