Granon_1980_Eur.J.Biochem_111_117

Reference

Title : Effect of taurodeoxycholate, colipase and temperature on the interfacial inactivation of porcine pancreatic lipase - Granon_1980_Eur.J.Biochem_111_117
Author(s) : Granon S , Semeriva M
Ref : European Journal of Biochemistry , 111 :117 , 1980
Abstract :

Beside their inhibitory effect upon lipase adsorption, bile salts at low concentration (around 0.2 mM) have repeatedly been shown to enhance lipolysis slightly. From the data reported in this paper, this activation has been attributed to a stabilization of the adsorbed lipase brought about by low concentrations of bile salts. This hypothesis relies on the following observations. (a) For a given temperature, the activation by bile salts depends on the substrate. It is maximum for trihexanoin (trihexanoylglycerol) and does not exist for tripropionin (tripropionylglycerol). (b) In the absence of bile salts, the optimal activities are obtained for different temperatures depending on the substrate. (c) For a given substrate, the activation by a low concentration of bile salts depends on the temperature. It increases when the temperature is raised (up to 35-40 degrees C) and completely disappears at a sufficiently low temperature (around 10 degrees C). (d) This temperature effect does not seem to be due to a modification of the physical parameters of the interface as measured by the interfacial tension. (r) Colipase, like bile salts, increases the lipase activity on short-chain triglycerides but only at high temperature when lipase denaturation occurs. It has no influence upon the activity when the temperature is sufficiently low (around 10 degrees C).

PubMedSearch : Granon_1980_Eur.J.Biochem_111_117
PubMedID: 7439178
Gene_locus related to this paper: pig-1plip

Related information

Substrate Trihexanoin
Gene_locus pig-1plip

Citations formats

Granon S, Semeriva M (1980)
Effect of taurodeoxycholate, colipase and temperature on the interfacial inactivation of porcine pancreatic lipase
European Journal of Biochemistry 111 :117

Granon S, Semeriva M (1980)
European Journal of Biochemistry 111 :117