JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Targeting HECT-type E3 ligases - insights from catalysis, regulation and inhibitors.

FEBS Letters 2017 September
Ubiquitination plays a pivotal role in most cellular processes and is critical for protein degradation and signalling. E3 ligases are the matchmakers in the ubiquitination cascade, responsible for substrate recognition and modification with specific polyubiquitin chains. Until recently, it was not clear how the catalytic activity of E3s is modulated, but major recent studies on HECT E3 ligases is filling this void. These enzymes appear to be held in a closed, inactive conformation, which is relieved by biochemical manoeuvres unique to each member, thus ensuring exquisite regulation and specificity of the enzymes. The new advances and their significance to the function of HECT E3s are described here, with a particular focus on the Nedd4 family members.

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