SDS-polyacrylamide gel electrophoresis analysis of LysSA12, LysSA97, and their derived proteins. Proteins were purified by nickel-nitrilotriacetic acid affinity chromatography and analyzed using 12% SDS-polyacrylamide gel electrophoresis. Lane M, protein ladder; lane 1, EGFP_LSA12AMI; lane 2, EGFP_LSA12AMICBD; lane 3, EGFP_LSA12CBD; lane 4, EGFP_LSA97AMI; lane 5, EGFP_LSA97AMICBD; lane 6, EGFP_LSA97CBD; lane 7, LSA12 CHAPCBD; lane 8, LysSA12; lane 9, LSA12AMICBD; lane 10, LSA12CHAP; lane 11, LSA12CHAPAMI; lane 12, LSA12AMI; lane 13, LSA97CHAPCBD; lane 14 LysSA97; lane 15, LSA97AMICBD.