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. 2021 Apr 15;8:653073. doi: 10.3389/fmolb.2021.653073

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Copyright © 2021 Fauvet, Finka, Castanié-Cornet, Cirinesi, Genevaux, Quadroni and Goloubinoff.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Quantitation of the most abundant soluble and insoluble proteins in wild-type (WT) Escherichia coli cells. Scatter plot of the relative mean mass fractions of 1,421 proteins from WT W3110 E. coli that were significantly quantified in the total fraction containing both soluble and insoluble proteins (X-axis), against only in the insoluble pellet fraction, containing mostly the insoluble proteins (Y-axis). (A) Before correction for the overrepresentation of the insoluble proteins in the pellet fractions. (B) After correction. Orange dots: 281 membrane proteins identified as such by the Uniprot database. Blue dots below the hatched line: proteins with a significant solubility index equal or >90%. Gray circles: other less significantly soluble proteins. Magenta dots: DnaK, DnaJ, and HtpG. Black dots, other canonical chaperones and major proteases.