The NIH grants listed in the Acknowledgments describing support for Robert. H. Singer were listed in error.
The corrected Acknowledgments section is given below:
We thank C. Deo and H. Bhargava for purified HaloTag protein, M. Freeman for cell culture, and D. Alcor for imaging technical (all at Janelia). We also thank J. M. Kim (Johns Hopkins) for assistance with yeast imaging. This work was supported by the Howard Hughes Medical Institute (Q.Z., J.B.G., I.C., A.V.W., A.X.A, A.N.T., J.L.-S., R.H.S., and L.D.L.) and NIH (A.R. and C.W.).