Polycomb group (PcG) protein. PcG proteins act by forming multiprotein complexes, which are required to maintain the transcriptionally repressive state of homeotic genes throughout development. PcG proteins are not required to initiate repression, but to maintain it during later stages of development. They act via the methylation of histones, rendering chromatin heritably changed in its expressibility. Component of the polycomb repressive complex 2 (PRC2), which methylates 'Lys-27' residues of histone H3 (H3K27me3), leading to transcriptional repression of the affected target gene. Widely expressed (PubMed:19825651). Highly expressed in shoot apical meristem and inflorescence meristem. Expressed in roots, leaves and immature seeds (PubMed:16753820). Belongs to the VEFS (VRN2-EMF2-FIS2-SU(Z)12) family.