Lytic transglycosylase with a strong preference for naked glycan strands that lack stem peptides. Localizes at the septal ring. Is also associated with some other structures/complexes along the cell cylinder. The SPOR domain binds septal peptidoglycans and is required to target RlpA to the septal ring. Deletion does not result in any obvious growth or division defects. Belongs to the RlpA family.