Sarewicz M, Dutka M, Froncisz W, Osyczka A. Magnetic interactions sense changes in distance between heme b(L) and the iron-sulfur cluster in cytochrome bc(1). Biochemistry. 2009;48:5708-20 pubmed publisher
..The measured changes in the phase relaxation enhancement provide the first direct experimental description of changes in the strength of dipolar coupling between the FeS cluster and heme b(L). ..