TY - RPRT TI - An operational RNA code for amino acids and possible relationship to genetic code. AU - P Schimmel AU - R Giegé AU - D Moras AU - S Yokoyama PY - 1993 DO - 10.1073/pnas.90.19.8763 UR - https://pubmed.ncbi.nlm.nih.gov/7692438/ ID - 7692438 ER -