>3u6xO (O:) observed residues (from ATOM records)
asikkvyrgmkngaetinddleainseltsggnvvhktgdetiagkktftgnvevngslt
lptkswsgelgggiilslrkkgttveysiggeisssilansnlvnrsvpnefcprnrcsl
vghmvggwnafhidipssgvcqwfgptassgtprgtgtypidh