Fig. 1From: Inhibitor of DNA binding in heart development and cardiovascular diseasesA schematic representation of Id proteins is shown. a, The lack of the ‘basic’ DNA-binding domain makes it impossible for HLH/bHLH heterodimers to bind to DNA directly. b, The black box represents the helix-loop-helix domain, which is important for Id dimerisation with other E proteinsBack to article page