Vol. 217, No. 10, October 1, 2018. 10.1083/jcb.201804185.

The immunofluorescence image in Figure 2 I was mislabeled as GFP-LC3B but is in fact immunofluorescence staining of endogenous LC3B. This information was correctly described in the original main text and figure legend and therefore does not affect the conclusion of the report.

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