Digestion in the cockroach
- 1 January 1928
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 22 (1) , 150-161
- https://doi.org/10.1042/bj0220150
Abstract
The proteolytic enzymes of the cockroach consist of a tryptase and a peptidase; peptase is absent. The tryptase resembles pancreatic trypsin in several particulars. The 2 enzymes differ in that, with a given protein, the range of activity of the cockroach protease extends further in the acid direction. The peptidase is present in the intestinal secretion. From a single experiment it appears to have an optimal zone of activity about pH 8.5. Lipase, as present in a crude emulsion of the cockroach gut, is usually activated by Na glycocholate; it is not activated by phosphates apart from their influence as buffers, and it shows an optimal ph zone around 8.0.This publication has 2 references indexed in Scilit:
- Digestion in the CockroachBiochemical Journal, 1927
- Factors Influencing the Action of Pancreatic LipaseBiochemical Journal, 1925