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Fig. 1.

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Fig. 1. Metabolic engineering for the accumulation of tryptophan. The red cross indicates targeted genes to be knocked out that are responsible for transcription of the tryptophan operon (trpR) , competition with chorismate to create other aromatic amino acids (pheA) , and tryptophan degradation (tnaA). 3-deoxy-D-arabinoheptulosonate 7-phosphate synthase (DS), 3-deoxy-D-arabinoheptulosonate 7-phosphate (DAHP).
J. Microbiol. Biotechnol. 2021;31:1465~1480 https://doi.org/10.4014/jmb.2107.07045
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