The NHR2 (Nervy homology 2) domain is found in the ETO protein where it mediates oligomerisation and protein-protein interactions. It forms an alpha-helical tetramer [1].

1: The tetramer structure of the Nervy homology two domain, NHR2, is critical for AML1/ETO's activity. Liu Y, Cheney MD, Gaudet JJ, Chruszcz M, Lukasik SM, Sugiyama D, Lary J, Cole J, Dauter Z, Minor W, Speck NA, Bushweller JH; Cancer Cell. 2006;9:249-260. PMID:16616331