to localize the membrane-bound , histone-degrading proteinase , which was previously isolated from the mitochondrial fraction , nuclei , mitochondria , lysosomes , peroxisomes , smooth and rough endoplasmic reticulum , ribosomes and plasma membranes were prepared from a rat liver homogenate according to established methods and characterized by marker enzyme activities .
C0230779
rough endoplasmic reticulum
C0035553
ribosomes