This domain is found in chromatin remodelling factors (CHDs) from subfamily II [1] including CHD3/4/5 from animals and PICKLE. from Arabidopsis. The exact function is, as yet, unknown.

1: PICKLE is a CHD subfamily II ATP-dependent chromatin remodeling factor. Ho KK, Zhang H, Golden BL, Ogas J; Biochim Biophys Acta. 2013;1829:199-210. PMID:23128324