Ab. Soloveva et al., THE EFFECT OF AMINO-ACIDS ON THE RATE OF HYDROXYLATION OF CHOLESTEROLCATALYZED BY MN AND FE PORPHYRINATES, Russian chemical bulletin, 45(12), 1996, pp. 2850-2853
The rate and extent of hydroxylation of cholesterol catalyzed by Mn an
d Fe porphyrinates in the presence of NaBH4 increase with the addition
of cysteine and histidine. This effect is more pronounced for cystein
e. Leucine does not accelerate the process.