Pulldown assays of full-length Ms6 LysB and Ms6LysBPGBD-EGFP and EGFP with purified peptidoglycan from: (a) M. smegmatis, E. coli, P. aeruginosa and B. subtilis. Pellet and supernatant fractions were analyzed by SDS-PAGE followed by Comassie-blue staining. Bovine serum albumin (BSA) was used as a control and was only present in the supernatant fractions. (b) As a negative control, Ms6 LysB was incubated without peptidoglycan. (c) Quantification of pulldown assays. Quantification was performed with 3 independent gels, including the represented in Panel A. Ms6 LysB (dark grey), Ms6 LysBPGBD-EGFP (ligth grey). For each bar, the mean ± SD of three independent assays is indicated. (d) Pulldown assays of full length Ms6 LysB with purified peptidoglycan from S. pneumoniae and S. aureus. Again, BSA was used as a control and is only present in the supernatant fractions.