>1ztkA (A:) observed residues (from ATOM records)
ivggtasvrgewpwqvtlhttsptqrhlcggsiignqwiltaahcfygvespkilrvysg
ilnqaeiaedtsffgvqeiiihdqykmaesgydiallklettvnyadsqrpislpskgdr
nviytdcwvtgwgyrklrdkiqntlqkakiplvtneecqkryrghkithkmicagyregg
kdackgdsggplsckhnevwhlvgitswgegcaqrerpgvytnvveyvdwilektqa