Nature Biotechnology
19, 532 - 533 (2001)
doi:10.1038/89267
Adding new meanings to the genetic codeNina Mejlhede, Peter E. Nielsen
& Michael Ibba
Nina Mejhede is a research associate, Peter E. Nielsen is a professor, and Michael Ibba is an associate research professor at the Center for Biomolecular Recognition, Panum Institute, University of Copenhagen, 2200 Copenhagen N, Denmark (mibba@imbg.ku.dk). Two new approaches offer the means to expand the repertoire of amino acids available for protein engineering.
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