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. 2017 May 12;7:1810. doi: 10.1038/s41598-017-01813-1

Figure 2.

Figure 2

SDS-PAGE (10–15% acrylamide) of the four purification stages. L: cell lysate, F: flow-through of the first affinity chromatography step, P: insoluble cell material, M: molecular weight marker; Weights of the used standard protein are indicated left of the gel., AC: eluate of the first affinity chromatography step, l: latent AbPPO4 (eluate of the second affinity chromatography step), a: activated AbPPO4 (eluate of size exclusion chromatography after activation with proteinase K).