>3btaA (A:) observed residues (from ATOM records)
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fwgdylqydkpyymlnlydpnkyvdvnnvgirgymylkgprgsvmttniylnsslyrgtk
fiikkyasgnkdnivrnndrvyinvvvknkeyrlatnasqagvekilsaleipdvgnlsq
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