the best substrates for alr2 are aromatic aldehydes ( e.g . pyridine-3-aldehyde ; km = 9 microm ; kcat/km = 150,000 s-1 m-1 ) , while among aldoses dl-glyceraldehyde is the preferred substrate ( km = 72 microm ; kcat/km = 17,250 ) .
C0001992
aldehydes
C0017854
glyceraldehyde