Seems to play some role in the cell surface expression of a chromosomally encoded receptor, named enterococcal binding substance (EBS), that mediates mating aggregate formation. Might interfere with the synthesis or assembly of EBS and function as a cell wall hydrolase. Cell wall location was proposed in PubMed:8226689 based on a low sequence similarity to a cell wall hydrolase and a penicillin-binding protein. However, this protein has a best similarity to ribonucleases H which are expected to be cytoplasmic. Belongs to the RNase H family. EbsB subfamily.