The isolation and partial characterization of trypsinogen, pancreatic secretory trypsin inhibitor and multiple forms of chymotrypsinogen and trypsin from the pancreas of the ostrich (Struthio camelus)

Nanette Smith, Ryno J. Naudé, Willem Oelofsen, Claude Lazure, András Patthy

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1. 1. PSTI, two chymotrypsinogens and two trypsins were purified to homogeneity by acid extraction, salt fractionation, SP-Sephadex C-50 chromatography and RP-HPLC. 2. 2. A third chymotrypsinogen, a trypsinogen and another trypsin were purified using an alkaline extraction procedure, followed by Trasylol- and Benzamidine-Sepharose affinity chromatography and hydroxylapatite chromatography. 3. 3. The enzymes differed in amino acid composition as well as in specific activities towards synthetic amidase and esterase substrates. 4. 4. N-terminal amino acid sequences were determined for one chymotrypsinogen and one trypsin.

Original languageEnglish
Pages (from-to)877-885
Number of pages9
JournalInternational Journal of Biochemistry
Issue number6
Publication statusPublished - Jun 1992


ASJC Scopus subject areas

  • Biochemistry

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