>3tt7B (B:) observed residues (from ATOM records)
iptviaydiysrllkdriimlgsaiddnvansivsqllflaaedpekeislyinspggsi
tagmaiydtmqfikpkvsticigmaasmgafllaagekgkryalpnsevmihqplggaqg
qateieiaakrilllrdklnkvlaertgqplevierdtdrdnfksaeealeyglidkilt