4.1.3.43 (4R)-4-hydroxy-2-oxohexanoate reaction catalyzed by BphI variants Y290F, L87N/Y290F and L87W/Y290F Paraburkholderia xenovorans pyruvate + propionaldehyde - ? 422191 4.1.3.43 (4R)-4-hydroxy-2-oxopentanoate - Paraburkholderia xenovorans pyruvate + acetaldehyde - ? 422192 4.1.3.43 (4S)-4-hydroxy-2-oxohexanoate double variants L87N/Y290F and L87W/Y290F inactive toward (4S)-4-hydroxy-2-oxohexanoate Paraburkholderia xenovorans pyruvate + propionaldehyde - ? 422195 4.1.3.43 (4S)-4-hydroxy-2-oxopentanoate - Thermus thermophilus acetaldehyde + pyruvate - ? 415901 4.1.3.43 (4S)-4-hydroxy-2-oxopentanoate - Paraburkholderia xenovorans pyruvate + acetaldehyde - ? 422196 4.1.3.43 (S)-4-hydroxy-2-oxohexanoate - Paraburkholderia xenovorans propanal + pyruvate - ? 421755 4.1.3.43 4-hydroxy-2-oxoheptanoate - Paraburkholderia xenovorans pyruvate + butanal - ? 422587 4.1.3.43 4-hydroxy-2-oxohexanoate - Thermus thermophilus propanal + pyruvate - ? 422589 4.1.3.43 4-hydroxy-2-oxohexanoate 4-hydroxy-2-oxohexanoate i.e. HOHA Paraburkholderia xenovorans propionaldehyde + pyruvate - ? 422590 4.1.3.43 4-hydroxy-2-oxohexanoate - Paraburkholderia xenovorans pyruvate + propionaldehyde - ? 422591