Plant pattern recognition receptor complexes at the plasma membrane

► Plant PRRs are surface-localized RLKs or RLPs that form multi-protein complexes. ► The LRR-RLK BAK1 is a major regulator of several PRR-mediated pathways. ► The LysM-RLK CERK1 is part of multi-specificity recognition complexes. ► The cytoplasmic kinase BIK1 is a key regulator of PTI downstream of multiple PRRs. ► Phosphorylation and ubiquitination events regulate the activity of PRR complexes.