FIGURE 2.

Determination of purity, yield and cleavage efficiency of the pre-nisin variants. (A) Purity of the purified nisin A and the variants nisin H and nisin H F₁I (Marker: Precision Plus Protein Dual Xtra standards Bio-Rad). (B) Yields after purification of nisin A and their corresponding variants via cation-exchange chromatography. (C) Quantification of the cleavage efficiency of NisP. (D) Chromatogram of nisin H. (E) Chromatogram of the nisin H F₁I variant. The pre-nisin variants before NisP cleavage were shown by blue dashed lines and after NisP cleavage by black lines. Error bars represent the standard deviation of at least three biological replicates.