Electron transfer (ET) is an important elementary step of chemical reaction.Phosphorus is the center of energy expression in biological system. As a result, the research on the ET of phosphoryl and nonphosphoryl pepti...Electron transfer (ET) is an important elementary step of chemical reaction.Phosphorus is the center of energy expression in biological system. As a result, the research on the ET of phosphoryl and nonphosphoryl peptides is very important for us to understand the role of phosphorus in life and reveal the secrets of life. In this paper, the ET in some phosphoryl and nonphosphoryl peptides are studied by ESR. It is observed that the electron transfers along the backbone of the peptide and that phosphoryl group takes part in the elementary process in the phosphoryl peptide first.展开更多
OH redical induced oxidation of methionine and N-phosphoryl methioninein aqueous solutions has been investigated using optical pulse radiolytical technique, theinfluence of N-phosphoryl group on the radiolytical proce...OH redical induced oxidation of methionine and N-phosphoryl methioninein aqueous solutions has been investigated using optical pulse radiolytical technique, theinfluence of N-phosphoryl group on the radiolytical processes of methionine has beenexplained by molecular structure and the rate constants of oxidation of N-phosphoryl methionine (NDM) by the OH radicals at different pH values have been determined. Thisresearch result suggests that the phosphonate ester has a coordinating effect on the radioprotection of methionine to the biological systems.展开更多
文摘Electron transfer (ET) is an important elementary step of chemical reaction.Phosphorus is the center of energy expression in biological system. As a result, the research on the ET of phosphoryl and nonphosphoryl peptides is very important for us to understand the role of phosphorus in life and reveal the secrets of life. In this paper, the ET in some phosphoryl and nonphosphoryl peptides are studied by ESR. It is observed that the electron transfers along the backbone of the peptide and that phosphoryl group takes part in the elementary process in the phosphoryl peptide first.
文摘OH redical induced oxidation of methionine and N-phosphoryl methioninein aqueous solutions has been investigated using optical pulse radiolytical technique, theinfluence of N-phosphoryl group on the radiolytical processes of methionine has beenexplained by molecular structure and the rate constants of oxidation of N-phosphoryl methionine (NDM) by the OH radicals at different pH values have been determined. Thisresearch result suggests that the phosphonate ester has a coordinating effect on the radioprotection of methionine to the biological systems.
