>4cd2A (A:) observed residues (from ATOM records)
ksltlivalttsygigrsnslpwklkkeisyfkrvtsfvptfdsfesmnvvlmgrktwes
iplqfrplkgrinvvitrnesldlgngihsaksldhalellyrtygsessvqinrifvig
gaqlykaamdhpkldrimatiiykdihcdvffplkfrdkewssvwkkekhsdleswvgtk
vphgkinedgfdyefemwtrdl