Vv. Borovkov et al., ENHANCEMENT OF CATALYTIC EFFICIENCY OF METALLOPORPHYRIN-REDUCTANT MOLECULAR-OXYGEN BIOMIMETIC SYSTEM BY AMINO-ACID EXTERNAL LIGANDS, Journal of molecular catalysis. A, Chemical, 120(1-3), 1997, pp. 1-4
The presence of aminoacid external ligands (Cys and His) markedly incr
eases the efficiency (in terms of reaction rate constant and turnover
number) of the metalloporphyrin-reductant-molecular oxygen catalytic s
ystem in cholesterol oxidation reactions; in so doing, Cys contained s
ystems are more active co-catalysts showing a pronounced maximum of co
ncentration dependence profiles.