>2xbbA (A:) observed residues (from ATOM records)
rdykrkyeffrrklkkqndipnkfemklrratvledsyrrimgvkradflkarlwiefdg
ekgldyggvarewffliskemfnpyyglfeysatdnytlqinpnsglcnedhlsyfkfig
rvagmavyhgklldgffirpfykmmlhkpitlhdmesvdseyynslrwilendpteldlr
fiideelfgqthqhelknggseivvtnknkkeyiylviqwrfvnriqkqmaafkegffel
ipqdlikifdenelellmcglgdvdvndwrehtkykngysanhqviqwfwkavlmmdsek
rirllqfvtgtsrvpmngfaelygsngpqsftveqwgtpeklprahtcfnrldlppyesf
eelwdklqmaientqg