>1p3rB (B:) observed residues (from ATOM records)
ektdeyllarfkgdgvkykakligiddvpdargdkmsqdsmmklkgmaaagrsqgqhkqr
iwvnislsgikiidektgviehehpvnkisfiardvtdnrafgyvcggegqhqffaiktg
qqaeplvvdlkdlfqviynvkkkeedkk