[Comparative biosynthesis of fatty acids, particularly lignoceric acid, in the kidney and brain of normal and "quaking" mice].

Palmityl-CoA elongation is normal in kidney and brain from Quaking mice. However elongation of stearyl-CoA and behenyl-CoA is disturbed in the mutant brain, but not in kidney. Moreove in both organs, the reaction products are the same in normal and Quaking animals. Thus the microsomal biosynthesis of very long chain fatty acid biosynthesis is normal in Quaking kidney and not in brain : the genetic control of elongating enzymes must be different according to the organ.