Histone methyltransferase that functions together with its binding partner LDL1/SWP1 as one of the regulators of flower timing in Arabidopsis (PubMed:17224141). Mediates H3K9me2 deposition and regulates gene expression in a DNA methylation-independent manner. Binds DNA through its zinc fingers and represses the expression of a subset of stimulus response genes. May represent a novel mechanism for plants to regulate their chromatin and transcriptional state, which may allow for the adaptability and modulation necessary to rapidly respond to environment or developmental cues (PubMed:23071452). L-lysyl-[histone] + S-adenosyl-L-methionine = H(+) + N(6)-methyl-L-lysyl-[histone] + S-adenosyl-L-homocysteine Component of a regulatory complex with LDL1/SWP1 (PubMed:17224141). Interacts with LDL1/SWP1 (PubMed:17224141). Associates with euchromatic regions. A number of isoforms are produced. According to EST sequences. In the pre-SET domain, Cys residues bind 3 zinc ions that are arranged in a triangular cluster; some of these Cys residues contribute to the binding of two zinc ions within the cluster. Displays reduced dimethylation of lysine 9 and lysine 27 of histone H3 and hyperacetylation of histone H4 within the FLC locus and shows a moderate delayed flowering (PubMed:17224141). Delayed flowering (PubMed:23071452). Belongs to the class V-like SAM-binding methyltransferase superfamily. Was originally thought to correspond to three different genes At2g23730, At2g23740 and At2g23750. Was originally thought to correspond to three different genes At2g23730, At2g23740 and At2g23750. Was originally thought to correspond to three different genes At2g23730, At2g23740 and At2g23750.