>4n27D (D:) observed residues (from ATOM records)
mpiyaynghkpqfadresnwiapdatligkvvvgenagfwfgavlrgdnepitigadtnv
qeqtimhtdigfpltigagctighrailhgctigentligmgaivlngakvgkncligag
tlvkegmeipdnslvvgsparvlrqlddaaveklrasakhyverghsfmrgmepa