>2ibtD (D:) observed residues (from ATOM records)
vetppevvdfmvslaeaprggrvlepacahgpflrafreahgtayrfvgveidpkaldlp
pwaegiladfllwepgeafdlilgnppygivgeaskypihvfkavkdlykkafstwkgky
nlygaflekavrllkpggvlvfvvpatwlvledfallreflaregktsvyylgevfpqkk
vsavvirfqksgkglslwdtqesesgftpilwaeyphwegeiirfeteetrkleisgmpl
gdlfhirfaarspefkkhpavrkepgpglvpvltgrnlkpgwvdyeknhsglwmpkerak
elrdfyatphlvvahtkgtrvvaawderaypwreefhllpkegvrldpsslvqwlnseam
qkhvrtlyrdfvphltlrmlerlpvrreygfht