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(a) Native gel of copurified His-tagged PqsC and PqsB showing comigration (lane 1). (b) Denaturing gel showing purified PqsB and PqsC proteins (lane 1) and reanalysis of the complex from the native gel (a) after that the band was excised, showing two bands corresponding to PqsC and PqsB (lane 2). M= molecular weight ladder.
