Primary structure determination of mono- and diacylglycerol lipase from Penicillium camembertii.

The complete amino acid sequence of mono- and diacylglycerol lipase from Penicillium camembertii was determined. This lipase has a single polypeptide chain consisting of 276 amino acid residues with two disulfide linkages. The primary structure was revealed by sequencing the digests of the intact and S-pyridylethylated proteins by trypsin, endoproteinase Lys-C and V8 protease. The two-dimensional electrophoresis was also carried out to confirm the internal sequence. The catalytic triad of this lipase was Ser, Asp and His, and one potential N-glycosylation site was also revealed.