Movie S4.

An mLnp1 punctum splits into two puncta. The arrowheads point to an mLnp1 punctum that splits.

Lunapark stabilizes nascent three-way junctions in the endoplasmic reticulum

Shuliang Chen, Tanvi Desai, James A. McNew, Patrick Gerard, Peter J. Novick, and Susan Ferro-Novick