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Purification of HspB. A, SDS-PAGE. Lane M, marker proteins; lane 1, P. putida S16 cell extract; lane 2, supernatant from (NH4)2SO4 precipitation; lane 3, source 30Q pool; lane 4, source 15ISO pool; lane 5, Mono Q fraction; lane 6, Sephacryl S-200 HR fraction. B, native PAGE of purified HspB. Lane M, native protein marker; lane 1, purified HspB. C, three-dimensional plot of HPLC analysis for FAD from the boiled HspB solution.
