the following three lines of evidence are presented to establish that significant fractions of the rat liver enzymes are loosely associated with the inner mitochondrial membrane : 1 ) when the mitochondrion is fractionated , the enzymes partition between the matrix and membrane fractions in the absence of detergent and partition solely to the matrix in the presence of detergent ;
C0230840
inner mitochondrial membrane
C0026237
mitochondrion