>1u3aA (A:) observed residues (from ATOM records)
qyedgkqyttlekpvagapqvleffsffcphayqfeevlhisdnvkkklpegvkmtkyhv
nfmggdlgkdltqawavamalgvedkvtvplfegvqktqtirsasdirdvfinagikgee
ydaawnsfvvkslvaqqekaaadvqlrgvpamfvngkyqlnpqgmdtsnmdvfvqqyadt
vkylsek