A new DUB makes linear ubiquitin a party to its own destruction.

Wiener, Reuven; Wolberger, Cynthia · Cell · 2013

basic_science · Level V

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Abstract

Linear ubiquitin (Ub) plays a role in nuclear factor κB signaling, but the deubiquitinating enzyme that disassembles these chains was unknown. In this issue of Cell, Keusekotten et al. identify a new enzyme that disassembles linear chains with the use of a mechanism that relies on Ub itself to help catalyze peptide bond cleavage.

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