Extended Data Fig. 2. The complex cleaves native PG oligomers to defined lengths similarly to synthetic PG oligomers.
To prepare linear glycan strands, extracted S. aureus Lipid II was incubated with transpeptidase-inactive PBP2S398G and then the SagB-SpdC complex or individual hydrolases (SagB or SagA). Reactions were quenched and products were then labeled with biotin-D-lysine (BDL) in the presence of the E. faecalis PBPX and visualized using a western blot method with HRP-streptavidin detection19,23,29.