Function
Member of the two-component regulatory system YpdA/YpdB, which is part of a nutrient-sensing regulatory network composed of YpdA/YpdB, the high-affinity pyruvate signaling system BtsS/BtsR and their respective target proteins, YhjX and BtsT. YpdB regulates expression of yhjX by binding to its promoter region. Activation of the YpdA/YpdB signaling cascade also promotes BtsS/BtsR-mediated btsT expression.