Co-Authors:
Muszkat, L., Department of Chemical Agroecology, Institute of Plant Protection, Volcani Center, Bet-Dagan 50250, Israel
Feigelson, L., Department of Chemical Agroecology, Institute of Plant Protection, Volcani Center, Bet-Dagan 50250, Israel
Bir, L., Department of Chemical Agroecology, Institute of Plant Protection, Volcani Center, Bet-Dagan 50250, Israel
Muszkat, K.A., Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel
Abstract:
The TiO2 photocatalyzed oxidation of the proteins serum albumin, ovalbumin and gamma globulin, is reported. All the amino acids were susceptible to photocatalytic oxidation. However, some were especially vulnerable. Tyrosine was particularly sensitive, as was the semiaromatic histidine, although to a lesser extent. The lack of an activating group on the aromatic ring in Phe, renders the system less amenable to degradation. The photocatalytic degradation of the aliphatic amino acids Gly and Asp, was particularly slow, like in the Fenton oxidation where production of glycine was observed during the cleavage of collagen induced by hydroxyl radicals. Intermediate degradation rate was noticed in Ser, Arg, Val, Cys and Phe. © 2001 Elsevier Science B.V. All rights reserved.
תפריט נגישות
ניגודיות עדינה
מונוכרום
הדגשת קישורים
חסימת אנימציה
פונט קריא
סגור
איפוס הגדרות נגישות
להורדת מודול נגישות חינם
