Abstract
The participation of fatty acid-binding protein (FABP) in the induction of peroxisomal beta-oxidation of fatty acids was investigated in vivo in an heterologous system. Bovine heart FABP was expressed in Saccharomyces cerevisiae under the control of two different promoters: a constitutive one and an oleic acid-inducible one. Constructs were introduced into yeast cells on multicopy and integrating plasmids. The heterologous FABP was present in yeast cells in two isoforms having pI values of about 5 and was able to bind oleic acid. The heterologous FABP had no significant effect on acyl-CoA oxidase activity at various concentrations of the inducing agent.
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