Abstract
Galactose oxidase is a type II copper protein that contains a square–pyramidal five-coordinate copper center and catalyzes the oxidation of primary alcohols to aldehydes with a concomitant reduction of molecular oxygen. Dimeric (4-methylpyridine-N)(N-salicylidene-tyrosinato-O, N, O′)copper(II), which contains two square–pyramidal five-coordinate copper centers and thus serves as a model for galactose oxidase, crystallizes in the monoclinic space group P2 1/c with a = 8.914(1) Å, b = 18.415(2) Å, c = 12.802(2) Å, β = 107.70(1)°. The dinuclear unit comprises two four-coordinate units each consisting of the tridentate Schiff base and 4-methylpyridine with a weaker out-of-plane link to the phenolic oxygen atom from the adjoining unit in a typical 4 + 1 distorted square–pyramidal geometry.
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Butcher, R.J., McKern, O. & Mockler, G.M. Model compounds for galactose oxidase: The crystal and molecular structure of dimeric (4-methylpyridine-N) (N-salicylidene-tyrosinato-O, N, O′)copper(II). Journal of Chemical Crystallography 33, 891–895 (2003). https://doi.org/10.1023/A:1027466014969
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DOI: https://doi.org/10.1023/A:1027466014969