MinervaBMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7382.232 (Published 25 January 2003) Cite this as: BMJ 2003;326:232
Chemists from California have created a new form of life—a bacterium that makes proteins out of 21 amino acids, one more than the 20 used by almost every other organism on earth. The new Escherichia coli can manufacture the extra amino acid, p-aminophenylalanine, then incorporate it into proteins. But is there any point? Further experiments to find out are planned (Journal of the American Chemical Society; see http://dx.doi.org/10.1021/ja0284153).
Vaccine research inched forward a little this week with the …
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