>4tw1F (F:) observed residues (from ATOM records)
apddigkngkitkrtetvydektnilqnlqfdfiddptydknvllvkkqgsihsnlkfes
hkeeknsnwlkypseyhvdfqvkrnrkteildqlpknkistakvdstfsyssggkfdigr
tssnsysktisynqqnydtiasgknnnwhvhwsviandlkyggevknrndellfyrntri
atvenpelsfaskyrypalvrsgfnpefltylsneksnektqfevtytrnqdilknrpgi
hyappileknkdgqrlivtyevdwknktvkvvdkysddnkpyke