Predicted to enable methylated histone binding activity. Predicted to contribute to histone methyltransferase activity (H3-K4 specific). Acts upstream of or within histone H3-K4 methylation; positive regulation of gluconeogenesis; and skeletal system development. Located in nucleus. Part of ATAC complex. Is expressed in cerebral cortex; testis; and vault of skull. Orthologous to human WDR5 (WD repeat domain 5). [provided by Alliance of Genome Resources, Apr 2022]