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Fig. 1 | Biology Direct

Fig. 1

From: IPC – Isoelectric Point Calculator

Fig. 1

Correlation of the experimental versus the theoretical isoelectric points for two protein datasets. Data for SWISS-2DPAGE (left panel) and PIP-DB (right panel) are calculated using the EMBOSS pKa set. Outliers are defined as MSE > 3 and are marked in red. Plots correspond to datasets as presented by the authors before cleaning and the removal of duplicates (duplicates are defined as records that have the same sequence but are referred to as separate records in the database). In both databases, the authors reported multiple pI values from different experiments for the same sequences in separate records. In such cases for the current analysis, the average pI was used. The solid line represents the linear regression after removal of the outliers

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