>1ft4B (B:) observed residues (from ATOM records)
vcpqgkyihpqnnsicctkchkgtylyndcpgpgqdtdcrecesgsftasenhlrhclsc
skcrkemgqveissctvdrdtvcgcrknqyrhywsenlfqcfncslclngtvhlscqekq
ntvctchagfflrenecvscsn