>1zt2D (D:) observed residues (from ATOM records)
aldvkkypfikslddelkkygggitltdlllnsttlidqakdriqktksgdelphyvsyn
epvlvfyttllslailndvklirryayaeakqfrsllhteneenlleisklldlkinrcd
pikfyiiqkefcvhfidylkytkdlkedwklsgqilhkgyvyldknqligliaesikski
vemirplnlkeipeklkslier