Normanly J, Ollick T, Abelson J
Division of Biology, California Institute of Technology, Pasadena 91125.
Proc Natl Acad Sci U S A. 1992 Jun 15;89(12):5680-4. doi: 10.1073/pnas.89.12.5680.
Each aminoacyl-tRNA synthetase must functionally distinguish its cognate tRNAs from all others. We have determined the minimum number of changes required to transform a leucine amber suppressor tRNA to serine identity. Eight changes are required. These are located in the acceptor stem and in the D stem.