The WalRK two-component system in Streptococcus pneumoniae ensures robustness of secondary wall polymer attachment
A strong negative genetic interaction is identified between the genes encoding the putative capsule ligase CpsA and the WalRK histidine kinase, a component of the WalRK two-component system regulating cell wall homeostasis, showing that the conserved capsule gene CpsA is not strictly required for capsule attachment but...