CPD and infection: In addition, the genes for the LysM domain protein SP_0107, the lipoproteins l,d-carboxypeptidase (DacB) and pneumococcal nucleoside receptor A (PnrA), the choline-binding protein E (CbpE, also referred to as Pce), the conserved hypothetical protein SP_1069, the oligopeptide-binding protein AmiA, and the autolysin LytA were shown to be important, meaning that their deletion caused a particular phenotype in at least one infection-relevant condition (45).