BRI1-associated receptor kinase 1

BAK1 belongs to a large group of plant proteins known as the Leucine-rich repeat receptor kinases (LRR-RKs).

In the model plant species Arabidopsis thaliana, BAK1 and 4 other closely related proteins form a sub-group within the LRR-RK family, known as the somatic embryogenesis receptor kinases (SERKs).

[5] Along with its role in plant defense, the ER:BAK1 complex also repress the development of stomata in leaves.

[5] The diverse functional roles of BAK1 are brought about through its binding to a large number of receptors.

One recent study has shown that BRI1 and FLS2 localize to different 'nano-domains' on the cell membrane and so it is possible that this spatial separation accounts for the very different signal outputs.