>2z1jA (A:) observed residues (from ATOM records)
mlkrveiftdgsclgnpgpggygailryrgrektfsagyerttnnrmelmaaivalealk
ehcevilstdshyvrkgitewihnwkkrgwkkadkkpvknvdlwkrldaalgrhkikwew
vkghaghpenercdelaraaamkpkledtgy