>1xk6A (A:) observed residues (from ATOM records)
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rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl
sgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltattaalaa
lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad
gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath
tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn
pgqiwrgmpshgmdtaailknigysendiqelvskglakved