2.4.99.20 lysosome - 5764 727868 2.4.99.20 membrane of heavy sarcoplasmic reticulum 16020 726898 2.4.99.20 microsome 0.13 nM/min*mg - 724210 2.4.99.20 mitochondrion 0.2 nM/min*mg 5739 724210 2.4.99.20 nucleus 0.4 nM/min*mg 5634 724210 2.4.99.20 plasma membrane 1.6 nM/min*mg 5886 724210 2.4.99.20 sarcoplasmic reticulum membrane of heavy sarcoplasmic reticulum 16529 726898