FIGURE 2.

Superimposed chains of four DNA‐binding proteins (PDBid: 1qvc, 1kaw, 1eyg, and 3ull), with names of associated sequences in the alignment highlighted with matching colors. The foreground helix was selected in the graphics window by dragging out the green/brown box on the sequence alignment. The missing structure is depicted by boxes on the alignment, outlined in black if missing from all chains, and in gray otherwise. The sequence window also shows a consensus sequence and sequence conservation histogram, with several choices for conservation scoring: the one in use in this figure is entropy‐based with independent counts as computed by the AL2CO program ³⁰