YkyA is a family of proteins containing a lipoprotein signal and a hydrolase domain. It is similar to cell wall binding proteins and might also be recognisable by a host immune defence system. It is thus likely to belong to pathways important for pathogenicity [1].

1: Conserved genes in a path from commensalism to pathogenicity: comparative phylogenetic profiles of Staphylococcus epidermidis RP62A and ATCC12228. Wei W, Cao Z, Zhu YL, Wang X, Ding G, Xu H, Jia P, Qu D, Danchin A, Li Y; BMC Genomics. 2006;7:112. PMID:16684363