- Structural variation and functional importance of a D-loop-T-loop interaction in valine-accepting tRNA-like structures of plant viral RNAs. de Smit, M.H., Gultyaev, A.P., Hilge, M., Bink, H.H., Barends, S., Kraal, B., Pleij, C.W. Nucleic Acids Res. (2002)