Component of the MICOS complex; MICOS, a mitochondrial inner membrane (MIM) complex extends into the intermembrane space and maintains crista junctions, MIM architecture, and formation of contact sites to the outer membrane; Mic60p is a lipid-binding protein, involved in membrane bending, and formation of inner-outer membrane contact sites; involved in import of intermembrane space proteins, positioning Mia40p relative to the TOM complex to receive incoming proteins; mammalian mitofilin ortholog