Predicted to enable histone methyltransferase activity (H3-K4 specific); unmethylated CpG binding activity; and zinc ion binding activity. Predicted to be involved in histone H3-K4 dimethylation; histone H3-K4 monomethylation; and positive regulation of transcription, DNA-templated. Predicted to act upstream of or within several processes, including DNA methylation-dependent heterochromatin assembly; female gamete generation; and histone H3-K4 trimethylation. Predicted to be located in nucleus. Predicted to be part of histone methyltransferase complex. Human ortholog(s) of this gene implicated in colorectal adenocarcinoma; dystonia; and hepatocellular carcinoma. Orthologous to human KMT2B (lysine methyltransferase 2B). [provided by Alliance of Genome Resources, Apr 2022]