Fig. 2. Hypothesis for the function of uncoupling protein-3 (UCP3): fatty acid
anions are transported out of the mitochondrial matrix to prevent accumulation
of fatty acid anions inside the matrix
(Schrauwen et al., 2001c). FA,
fatty acid; CoA, coenzyme A; FAS, fatty acyl-CoA synthetase; CPT1, carnitine
palmitoyl transferase-1; CPT2, carnitine palmitoyl transferase-2;
H+, proton gradient.