@article{oai:kanazawa-u.repo.nii.ac.jp:00010144, author = {Sakurai, Takeshi and Kataoka, Kunishige}, issue = {19-20}, journal = {Cellular and Molecular Life Sciences}, month = {Oct}, note = {The type I copper center in multicopper oxidases is constructed from 1Cys2His and weakly coordinating 1Met or the non-coordinating 1Phe/1Leu, and it exhibits spectral properties and an alkaline transition similar to those of the blue copper center in blue copper proteins. Since the type I copper center in multicopper oxidases is deeply buried inside the protein molecule, electron transfers to and from type I copper are performed through specific pathways: the hydrogen bond between an amino acid located at the substrate binding site and a His residue coordinating type I copper, and the His-Cys-His sequence connecting the type I copper center and the trinuclear copper center comprised of a type II copper and a pair of type III coppers. The intramolecular electron transfer rates can be tuned by mutating the fourth ligand of type I copper. Further, mutation at the Cys ligand gives a vacant type I copper center and traps the reaction intermediate during the four-electron reduction of dioxygen. © 2007 Birkhäuser Verlag., 金沢大学大学院自然科学研究科物質創成}, pages = {2642--2656}, title = {Structure and function of type I copper in multicopper oxidases}, volume = {64}, year = {2007} }