Fig. 1

Mining of propeptides from sequenced Lactococcus genome assemblies. a Alignment of native Lactococcus proteins with USP45-LEISSTCDA sequence. Alignment was created in ESPript 3.0 [31]. b Comparison of isoelectric points and net charges of the three propeptides (PP1–PP3) and positive control LEISSTCDA (PC) propeptide