There was an error published in J. Cell Sci.127, 4531-4541.

Incorrect concentrations of the components used to establish the oxidising redox potential were given in the ‘Redox buffering’ section of the Materials and Methods. The correct sentence should read: An oxidising redox potential of −180 mV was established with 0.95 mM GSH and 0.1 mM GSSG.

The authors apologise to the readers for any confusion that this error might have caused.

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