Chromatin remodeling factor that binds to methylated histone (e.g. H3K4me2/3) to prevent their acetylation (e.g. H3K9K14Ac), likely by recruiting histone deacetylase (HDAC) complexes, and thus regulate the transcription of target genes. Recognizes di- and trimethylated histone H3 at lysine 4. Belongs to the SHL1/EBS protein family. Lacks two Cys residues in the RING-type zinc finger domain 2 that are conserved features of the family.