Involved in the pathway that organizes the prospore membrane (PSM) during sporulation. May interact directly with ADY3. Probable component of a spindle pole body (SPB) complex composed of ADY3, SSP1, DON1, MPC54, SPO21/MPC70, NUD1 and CNM67. Towards the end of meiosis I, or early stages of meiosis II, it forms circular structures above the meiotic plaque. As soon as an assembled prospore membrane is visible during meiosis II, it is detected at the leading edge, which cover the ring-shape opening of the PSMs. Probably recruited to the leading edges by ADY3. Meiosis-specific.