The molecular weight of triacylglycerol lipase (EC 188.8.131.52) from Pseudomonas fluorescens is estimated to be approx. 33 000 by sodium dodecyl sulfate electrophoresis and Sephadex G-75 gel filtration. The lipase appears to be a single-chain protein and contains neither sugar nor lipid. The enzyme has a sedimentation coefficient (s20,w) of 3.06, an intrinsic viscosity of 3.0 g/ml and a partial specific volume of 0.730 g/ml, with an isoelectric point of pH 4.46. Amino acid analysis showed that the enzyme contained few sulfur-containing amino acid residues with no disulfide links. The N-terminal residue of the enzyme was found to be alanine and optical rotation dispersion analysis showed that about 20% of the enzyme structure was in a helical configuration. © 1977.
Mamoru, S., & Tsutomu, O. (1977). Physicochemical properties of a lipase from pseudomonas fluorescens. Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism, 489(2), 262–268. https://doi.org/10.1016/0005-2760(77)90145-X