>4kthD (D:) observed residues (from ATOM records)
iagfieggwqgmvdgwygyhhsneqgsgyaadkestqkaidgvtnkvnsiidkmntqfea
vgrefnnlerrienlnkkmedgfldvwtynaellvlmenertldfhdsnvrnlydkvrlq
lkdnakelgngcfefyhkcdnecmesvrngtydypqyseearlkreeiss