β-Oxidation of odd- chain fatty acids

β-Oxidation of odd- chain fatty acids produces:

A. Succinyl CoA 
B. Propionyl CoA
C. Acetyl CoA 
D. Malonyl CoA

Answer. B. Propionyl CoA .

In β-oxidation, “2” carbon atoms at a time are cleared from Acetyl-CoA molecules, starting at carboxyl end. The chain is broken between the β -2 and β -3 carbon atoms.

Hence the name β-oxidation.

Fatty acid with an odd no. of carbon atoms are oxidized by the pathway of β- Oxidation producing Acetyl CoA, until a three carbon atom molecule propionyl CoA molecule remains.