1. Institute of Biochemistry and Biophysics, Department of Protein Biosynthesis, Pawinskiego 5a, 02–106 Warsaw, Poland (M.C., H.F., A.C., Y.G., A.S., L.B., K.K., Z.P., S.K., S.S.); Warsaw University, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland (A.C.); and