. "(24R, 25R) 3alpha,7alpha,12alpha,24-tetrahydroxy-5beta-cholestanoyl-CoA and NAD+ react to form 3alpha,7alpha,12alpha-trihydroxy-5beta-cholest-24-one-CoA, NADH, and H+. This oxidation reaction, catalyzed by the peroxisomal D-bifunctional enzyme (Huyghe et al. 2006), occurs in the peroxisomal matrix."^^ . . . .