>3nzxN (N:) observed residues (from ATOM records)
tsimavtfkdgvilgadsrtttgayianrvtdkltrvhdkiwccrsgsaadtqaiadivq
yhlelytsqygtpstetaasvfkelcyenkdnltagiivagyddknkgevytiplggsvh
klpyaiagsgstfiygycdknfrenmskeetvdfikhslsqaikwdgssggvirmvvlta
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