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. 2021 Jan 25;20:24. doi: 10.1186/s12934-021-01514-5

Fig. 5.

Fig. 5

pH value effects on the cation exchange purification of PPV VLPs with Capto S ImpAct resin. The KM-PPV-VP2 cell lysates disrupted with PBS buffer pH7.4, and adjusted to pH 5.3–4.0 with acetic acid. After centrifugation at 12,000 rpm for 15 min, 2 ml supernatants were loaded onto Biorad Poly-Prep chromatography columns packaged with 1 mL Capto S ImpAct resins and eluted PBS pH7.4 containing 0.5 M NaCl. Lane F: flow-through fractions; Lane E: elution fractions