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Table 1 Intra-organelle pH and membrane charge

From: Localization-specific distributions of protein pI in human proteome are governed by local pH and membrane charge

Compartment pH (2009) pH (2015) Charge, %
Cytoplasm 7.3 7.2 0.0
Nucleus 7.7 7.2 17.4
E.R. 7.1 7.2 17.4
MX 7.5 8.0 10.0
Golgi 6.6 6.0–6.7 10.0
Peroxisome 8.2 7.0 2.0
Lysosome 4.8 4.7 4.7
Membrane 8.5