Similarity of EM maps of ClpB. ClpB (gray) and bound ClpP (green) in the query, EMD-2566, was separately compared against the corresponding part of four related entries, EMD-2563, 2557, 2558, 2559, and 2562. The numbers are the Euclidean distances of 3DZDs between them. EMD-2563 contains only ClpB. The Euclidean distance shown for EMD-2563 (21.13) is computed for the complete maps of EMD-2556 and EMD-2563.