Figure 5From: Novel structural features in two ZHX homeodomains derived from a systematic study of single and multiple domainsComparison of a region of engrailed HD and ZHX1 HD4 containing certain co-variant residues. Engrailed HD (blue backbone, orange side-chains) showing the extensive ionic and hydrogen-bonding interactions involving commonly observed co-variant residues. These interactions are absent in ZHX1 HD4 (red backbone, gray side-chains).Back to article page