>3tt7D (D:) observed residues (from ATOM records)
iptviaydiysrllkdriimlgsaiddnvansivsqllflaaedpekeislyinspggsi
tagmaiydtmqfikpkvsticigmaasmgafllaagekgkryalpnsevmihqplggaqg
qateieiaakrilllrdklnkvlaertgqplevierdtdrdnfksaeealeyglidkilt