>3drnA (A:) observed residues (from ATOM records)
vkvgdkaplfegiadngekislsdyigkhnivlyfypkddtpgstreasafrdnwdllkd
ydvvvigvssddinshkrfkekyklpfilvsdpdkkirelygakgfilparitfvidkkg
iirhiynsqmnpanhvnealkalkqikeeeis