This SWIRM domain is a small alpha-helical domain of about 85 amino acid residues found in chromosomal proteins. It contains a helix-turn helix motif and binds to DNA [1].

1: Structure and function of the SWIRM domain, a conserved protein module found in chromatin regulatory complexes. Da G, Lenkart J, Zhao K, Shiekhattar R, Cairns BR, Marmorstein R; Proc Natl Acad Sci U S A. 2006;103:2057-2062. PMID:16461455