The Interaction Between the Urinary Trypsin Inhibitor and Trypsin

Authors

G. J. Proksch, Indiana University Medical Center
J. I. Routh, University of IowaFollow

Document Type

Research

Abstract

Gel filtration and disc electrophoresis were used as simple and fast techniques for the investigation of the interaction and stoichiometry between UTI and trypsin. UTI appears to possess only a single trypsin binding site. The nature of the interaction between the inhibitor and enzyme appears to be dependent on the concentration ratio of the reactants. When UTI is in excess molar concentration, a single binary complex with trypsin of mol. wt. 95,000 is observed. In the presence of a molar excess of enzyme, this macromolecule is no longer observed, but proteins of mol. wt. 41,000 and 20,000 result. The possibility that UTI may be hydrolyzed to a partially degraded active fragment by the excess enzyme resulting in the formation of a modified inhibitor enzyme complex is proposed.

Publication Date

June 1973

Journal Title

Proceedings of the Iowa Academy of Science

Volume

80

Issue

2

First Page

52

Last Page

55

Copyright

©1973 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Proksch, G. J. and Routh, J. I. (1973) "The Interaction Between the Urinary Trypsin Inhibitor and Trypsin," Proceedings of the Iowa Academy of Science, 80(2), 52-55.
Available at: https://scholarworks.uni.edu/pias/vol80/iss2/5