>2x3eB (B:) observed residues (from ATOM records)
raavvcglgsylpeavlsndmlaaeldtsdawissrtgvrqrhiagdlgsgdlalraasa
alasaglervdavvlatstgdfccpataprvaarlglvgalafdlsaaatgfvyglasvg
slisagladsallvgvdtfshtldpadrstralfgdgagavvlragdaeeegallafdlg
sdghqfdllmtpavsranyfrmdgkavfgqavtqmsdsvrrvldrvgwqasdlhhlvphq
antrilaavadqldlpvervvsniaevgntvaasiplalahglrqgilrdggnmvltgfg
agltwgsvalrwpkivp