Deubiquitinases sharpen substrate discrimination during membrane protein degradation from the ER.

Cell · 2013 · PMC3732389 · PMID 23890821

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may not be significantno p-value reported

Although this may not be significant for a single encounter, the additive effect of multiple encounters would explain the difference preferentially seen for long ubiquitin chains.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.