Tiki casts a spell on Wnt.

Vincent, Jean-Paul; Magee, Tony · Cell · 2012

editorial · Level V

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Abstract

Negative feedback is a widespread feature of signaling pathways. In an unexpected twist described in this issue, He and colleagues identify a membrane-tethered metalloprotease named Tiki that inhibits Wnt signaling by removing an essential eight-residue fragment from Wnt itself.