>3u6xK (K:) observed residues (from ATOM records)
asikkvyrgmkngaetinddleainseltsggnvvhktgdetiagkktftgnvevngslt
lptkswsgelgggiilslrkkgttveysiggeisssilansnlvnrsvpnefcprnrcsl
vghmvggwnafhidipssgvcqwfgptassgtprgtgtypidh