(A) SDS-PAGE. Lane 1, cell extract from noninduced cells; lane 2, cell extract from OA-induced cells; lane 3, low-molecular-weight markers, from top: 94,000, 67,000, 43,000, 30,000, 20,000, and 14,000. (B) Size exclusion chromatography of oleate hydratase (solid line) and mass markers (dotted line), blue dextran (2,000 kDa), bovine serum albumin dimer (134 kDa), bovine serum albumin monomer (67 kDa), and cytochrome c (12 kDa).