title: Theory of electrophoresis of reacting systems as applied to the sulfhydryl oxidation of creatine kinase.
abstract: In an attempt to explain the unusual electrophoretic behavior of fish muscle creatine kinase, a phenomenological theory of transport of reacting systems has been formulated for the electrophoresis of a sulfhydryl protein undergoing oxidation in the presence of a gradient of molecular oxygen. The model assumes slow O2-oxidation of sulfhydryl groups followed by rather rapidly reversible sulfhydryl-disulfide interchange with concomitant change in the electrophoretic mobility of the protein. The computed electrophoretic patterns for this model exhibit a sharp, unimodal ascending boundary but a bimodal descending boundary in which the proportions of the two peaks are time dependent. There is a striking similarity between the theoretical patterns and their experimental counterparts (M.D. Doherty, D.A. Bergman, V.M. Re-Miller, and D.J. Winzor, 1980, Arch. Biochem. Biophys. 202, 558-564); and hence support for consideration of the electrophoresis of fish muscle creatine kinase in these terms.
mesh_terms: D000818:Animals; D003402:Creatine Kinase / Q000302:isolation & purification*; D004586:Electrophoresis / Q000379:methods; D005399:Fishes; D008433:Mathematics; D008956:Models, Chemical; D009132:Muscles / Q000201:enzymology; D010084:Oxidation-Reduction; D013438:Sulfhydryl Compounds
chemical_list: D013438:Sulfhydryl Compounds; D003402:Creatine Kinase