Syt1 is a primary Ca2+ sensor for secretion but the function of non-Ca2+ -affinitive Syt11 remains unknown. Here, authors identify strong but Ca2+ -inhibited lipid affinity of Syt11, and a Syt11-1-11 inter-switch during excitation-coupled exo-endocytosis.
- Xuanang Wu
- Jingyu Yao
- Huadong Xu