How Single and bifurcatedHydrogen Bonds Influence Proton-Migraton Rate Constants,Redox,and electronic Properties of Phenoxyl Radicals

摘要

Tyrosine/tyrosyl radicla redox systems are involved in many bologicla processes.Among tyrosyl-radical enzymes,interest has been mainly focused on photosystem II,prostaglandin H synthase,galactose oxidase and ribonucleotide reductase.The phenolic(or phenolate)oxygen may be either bonded to a meta cneter (as in galactose oxydase) or resudue of the protein.