>4n27C (C:) observed residues (from ATOM records)
mpiyaynghkpqfadresnwiapdatligkvvvgenagfwfgavlrgdnepitigadtnv
qeqtimhtdigfpltigagctighrailhgctigentligmgaivlngakvgkncligag
tlvkegmeipdnslvvgsparvlrqlddaaveklrasakhyverghsfmrgmepa