Tween hydrolysis by known cutinases and M. smegmatis partially purified MPLA assessed by TLC. The presence of oleic acid indicates hydrolysis. Lanes: OA, oleic acid; T80, Tween 80 alone; A2, snake venom PLA2; M, M. smegmatis partially purified MPLA; FS, F. solani cutinase (7.5 μg/ml); TL, T. lanuginosus lipase (7.5 μg/ml), all with Tween 80. M. smegmatis partially purified MPLA and F. solani and T. lanuginosis cutinases, but not snake venom PLA2, also hydrolyzed Tween 20, Tween 40, and Tween 60 (data not shown).