Human pancreatic triglyceride lipase expressed in yeast cells: Purification and characterization

Yanqing Yang, Mark E. Lowe

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


A cDNA clone encoding human pancreatic triglyceride lipase was cloned into a yeast expression vector so that the yeast PHO1 signal peptide replaced the native signal peptide. Pichia pastoris cells were transfected with the vector, and clones expressing human pancreatic triglyceride lipase were isolated. Recombinant human pancreatic lipase was expressed in broth cultures and was purified from the medium by DEAE blue Sepharose and hydroxyapatite chromatography. The highly purified lipase had specific activities for various triglyceride substrates identical to those of tissue-purified human pancreatic triglyceride lipase; it was inhibited by bile salts, required colipase for activity, and demonstrated interfacial activation. This expression system is suitable for the rapid, efficient production of human pancreatic triglyceride lipase in amounts adequate for biophysical studies.

Original languageEnglish
Pages (from-to)36-40
Number of pages5
JournalProtein Expression and Purification
Issue number1
StatePublished - Jun 1998


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