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Table 2 Comparison of the pI bias for subsets of organellar proteomes.

From: The relationships between the isoelectric point and: length of proteins, taxonomy and ecology of organisms

Analysed proteome Nuclear-coded proteins targeted to organelle Organelle-encoded proteomes
  the whole sequence the mature protein quartile 25% median quartile 75%
plastid -5.7 -53.1 9.8 17.4 29.3
mitochondrion – Protista 4.8 -33.3 49.2 59.1 65.0
mitochondrion – Viridiplantae -9.4 -58.1 45.4 56.4 69.4
mitochondrion – Fungi 44.4 -6.9 0.0 20.0 47.4
mitochondrion – non-Chordata 21.9 -34.4 -23.1 0.0 23.1
mitochondrion – Chordata 46.0 -15.0 -23.1 -7.7 7.7