TY - JOUR
T1 - Catalysis and inhibition of tyrosinase in the presence of cinnamic acid and some of its derivatives
AU - Garcia-jimenez, Antonio
AU - García-molina, Francisco
AU - Teruel-puche, Jose A.
AU - Saura-sanmartin, Adrian
AU - Garcia-ruiz, Pedro A.
AU - Ortiz-lopez, Antonio
AU - Rodríguez-lópez, Jose N.
AU - Garcia-canovas, Francisco
AU - Munoz-munoz, Jose
PY - 2018/11
Y1 - 2018/11
N2 - The kinetic action of tyrosinase on l-tyrosine and l-Dopa as substrates in the presence of cinnamic acid and some of its derivatives has been characterized. Cinnamic acid, 2-hydroxycinnamic, 2,3 and 4-methoxycinnamic acids were seen to be inhibitors of tyrosinase being determined the type of inhibition and inhibition constants of all of them. However, 3-hydroxycinnamic, 4-hydroxycinnamic and 3,4-dihydroxycinnamic acids were seen to be substrates of tyrosinase at the same time. The kinetic constants of the catalysis of these substrates were determined and found to be perfectly correlated with the chemical shifts of the carbon with the phenolic hydroxyl group revealed by NMR. Docking studies of 2-hydroxycinnamic and 3-hydroxycinnamic acids showed that tyrosinase is able to hydroxylate 3-hydroxycinnamic acid but is unable to hydroxylate 2-hydroxycinnamic acid.
AB - The kinetic action of tyrosinase on l-tyrosine and l-Dopa as substrates in the presence of cinnamic acid and some of its derivatives has been characterized. Cinnamic acid, 2-hydroxycinnamic, 2,3 and 4-methoxycinnamic acids were seen to be inhibitors of tyrosinase being determined the type of inhibition and inhibition constants of all of them. However, 3-hydroxycinnamic, 4-hydroxycinnamic and 3,4-dihydroxycinnamic acids were seen to be substrates of tyrosinase at the same time. The kinetic constants of the catalysis of these substrates were determined and found to be perfectly correlated with the chemical shifts of the carbon with the phenolic hydroxyl group revealed by NMR. Docking studies of 2-hydroxycinnamic and 3-hydroxycinnamic acids showed that tyrosinase is able to hydroxylate 3-hydroxycinnamic acid but is unable to hydroxylate 2-hydroxycinnamic acid.
KW - Tyrosinase inhibition
KW - Cinnamic acid alternative substrate
KW - Docking
U2 - 10.1016/j.ijbiomac.2018.07.173
DO - 10.1016/j.ijbiomac.2018.07.173
M3 - Article
SN - 0141-8130
VL - 119
SP - 548
EP - 554
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -