>1xa4B (B:) observed residues (from ATOM records)
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rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl
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lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad
gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath
tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn
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