>2iszB (B:) observed residues (from ATOM records)
mnelvdttemylrtiydleeegvtplrariaerldqsgptvsqtvsrmerdgllrvagdr
hleltekgralaiavmrkhrlaerllvdviglpweevhaeacrwehvmsedverrlvkvl
nnpttspfgnpipglvelgv