In budding yeast ageing factors are retained in the mother cell, ensuring that the newly formed bud remains young. It is shown that a septin-dependent barrier forms in the nuclear envelope, which prevents pre-existing nuclear pores and other ageing factors from moving into the newly formed bud. These results demonstrate the importance of the nuclear envelope in ageing in yeast cells.
- Zhanna Shcheprova
- Sandro Baldi
- Yves Barral