FIG. 2.

Substrate specificity of rAld1 purified from E. coli(pCM1). Enzyme activity was measured under standard conditions. One hundred percent corresponds to 10.9 U/mg of protein. Numbers on the x axis indicate n-alkanals as follows: 2, ethanal (100 mM); 3, propanal (100 mM); 4, butanal (20 mM); 5, pentanal (10 mM); 6, hexanal (5 mM); 7, heptanal (5 mM); 8, octanal (2 mM); 9, nonanal (2 mM); 10, decanal (2 mM); 11, undecanal (1 mM); 12, dodecanal (1 mM); 13, tridecanal (1 mM); 14, tetradecanal (1 mM).