title: Amino acid signaling in high definition.
abstract: In this issue of Structure, Zhang and colleagues present the structure of the Ego3 dimer, demonstrating that dimerization is an obligate prerequisite in amino acid-induced TORC1 activation.
authors.affiliation: Department of Molecular Biology, University of Geneva, Geneva CH-1211, Switzerland.
authors.forename: Christl
authors.initials: C
authors.lastname: Gaubitz
authors.forename: Robbie
authors.initials: R
authors.lastname: Loewith