Volume 2, Issue 1, Pages 1-4 (January 1994) Built by association: structure and function of helix-loop-helix DNA-binding proteins  Simon EV Phillips  Structure  Volume 2, Issue 1, Pages 1-4 (January 1994) DOI: 10.1016/S0969-2126(00)00002-2

Figure 1 Partial sequence alignment of HLH DNA-binding domains of some transcription factors. Amino acid numbering corresponds to that for full size murine Max protein. Conserved regions and residues are coloured, and the two helices of the HLH are labelled H1 and H2. (Adapted from [3] with permission.) Structure 1994 2, 1-4DOI: (10.1016/S0969-2126(00)00002-2)

Figure 2 Crystal structure of Max b/HLH/Z bound to an oligonucleotide containing a central CACGTG sequence. The subunits of the Max homodimer are coloured red and yellow. (Reproduced from [4] by permission of Oxford University Press.) Structure 1994 2, 1-4DOI: (10.1016/S0969-2126(00)00002-2)

Figure 3 Crystal structure of the USF b/HLH–DNA complex in a similar orientation to Figure 2. (Reproduced from [4] by permission of Oxford University Press.) Structure 1994 2, 1-4DOI: (10.1016/S0969-2126(00)00002-2)