Jd. Sutherland et al., DIRECTED EVOLUTION OF NOVEL BIOSYNTHETIC PATHWAYS - GROWTH OF AN ESCHERICHIA-COLI PROLINE AUXOTROPH ON DELTA(1)-PYRROLINE-2-CARBOXYLIC ACID, Bioorganic & medicinal chemistry letters, 3(6), 1993, pp. 1185-1188
A directed approach to the evolution of novel biosynthetic pathways is
exemplified by the selection of plasmids which enhance the growth of
an Escherichia coli proline auxotroph on an unnatural precursor, DELTA
1-pyrroline-2-carboxylic acid 2.