Polycomb group (PcG) protein. Component of the prc2/eed-ezh2 complex, which methylates 'Lys-9' and 'Lys-27' of histone H3, leading to transcriptional repression of the affected target gene (By similarity). Component of the prc2/eed-ezh2 complex. Belongs to the VEFS (VRN2-EMF2-FIS2-SU(Z)12) family.