>1ss4B (B:) observed residues (from ATOM records)
nkllrmdnvsivvesldnaisffeeiglnlegranvegewagrvtglgsqcveiammvtp
dghsrielsrfltpptiadhrtapvnalgylrvmftvedidemvsrltkhgaelvgevvq
yensyrlcyirgvegiliglaeelg