A grant number was missing in the Acknowledgments section (MCB 2210228). Please see corrected section.
Acknowledgments
This work was supported by the National Science Foundation MCB 00581612 and MCB 2210228 to L.J.L. and the National Institutes of Health R01GM114537 to M.R.P. qTOF analysis was performed at the USC Chemistry Mass Spectrometry Core and the Agilent Center of Excellence in Biomolecular Characterization.
