>3tt6E (E:) observed residues (from ATOM records)
iysrllkdriimlgsaiddnvansivsqllflaaedpekeislyinspggsitagmaiyd
tmqfikpkvsticigmaasmgafllaagekgkryalpnsevmihqeiaakrilllrdkln
kvlaertgqplevierdtdrdnfksaeealeyglidkilt