LPP and ocular melanoma: The mechanism for OMV induction by glycine is considered to be a similar phenomenon to that observed in the depletion of nlpI, where the loss of the OM-PG bridge (i.e., Braun’s lipoprotein Lpp) increases OM looseness and the accumulation of PG fragments increases OM protrusion, thus resulting in OMV production (Figures 8A,B).