JBC, Vol. 254, Issue 11, 4305-4308, Jun, 1979
Heme-associated subunit complex of cytochrome c oxidase identified by a new two-dimensional gel electrophoresis
J. A. Freedman, R. P. Tracy and S. H. Chan
A Novel two-dimensional system (isoelectric focusing in the first dimension
and sodium dodecyl sulfate-urea electrophoresis in the second) was used to
determine the pI values of beef heart subunits of cytochrome c oxidase. The
results identified a heme-associated complex of Subunits I, II, and IV.
Conditions mitigate against migration of free heme.