>4y4yD (D:) observed residues (from ATOM records)
gitvlthselsaeigvtdsivvsselvmpytvgtwlrgvaanwskyswlsvrytyipscp
sstagsihmgfqydmadtvpvsvnqlsnlrgyvsgqvwsgsaglcfingtrcsdtstais
ttldvsklgkkwypyktsadyatavgvdvniatplvparlvialldgssstavaagriyc
tytiqmiepta