the polarization of fluorescence of fitc covalently attached to the ca2+-atpase is low in the native sarcoplasmic reticulum due to energy transfer , consistent with the existence of atpase oligomers ( highsmith , s. and cohen , j.a . ( 1987 ) biochemistry 26 , 154-161 ) ;
C0001476
ca2
C0001473
atpase