Rab1-AMPylation by Legionella DrrA is allosterically activated by Rab1

Abstract

The Legionella effector DrrA AMPylates the host protein Rab1 during infection, but the mechanism is still under debate. Here, the authors provide structural insights into the low-affinity DrrA:Rab1 interaction, showing that Rab1 allosterically activates DrrA through a non-conventional binding mechanism.