Chao-Tsung Yang and Stephen L. Johnson

There was an error published in Development133, 3563-3573.

The chemical name for MoTP used in this study should be 4-(4-morpholinobutylthio)phenol, rather than (2-morpholinobutyl)-4-thiophenol,which specifies a different chemical structure. The structure for MoTP shown in Fig. 4A remains correct.

The authors apologise to readers for this mistake.