>2it0B (B:) observed residues (from ATOM records)
elvdttemylrtiydleeegvtplrariaerldqsgptvsqtvsrmerdgllrvagdrhl
eltekgralaiavmrkhrlaerllvdviglpweevhaeacrwehvmsedverrlvkvlnn
pttspfgnpipglvelgvasenlyf