>4y76A (A:) observed residues (from ATOM records)
ivggqeckdgecpwqallineenegfcggtilsefyiltaahclykrfkvrvgdrnteqe
eggeavhevevvikhnrftketydfdiavlrlktpitfrmnvapaclperdwaestlmtq
ktgivsgfgrthekgrqstrlkmlevpyvdrnscklsssfiitqnmfcagydtkqedacq
gdsggphvtrfkdtyfvtgivswgegcarkgkygiytkvtaflkwidrsmkt