Structural Basis of Substrate Discrimination and Integrin Binding by Autotaxin.

The enzyme autotaxin (ATX) produces the lipid mediator LPA to stimulate cell migration and proliferation. The crystal structures of rat ATX, in its apo and inhibitor-bound forms, along with functional work, offer insight into substrate specificity and show that ATX interacts with integrins through one of its SMB domains.