Fine-Tuning l -Arginine Biosynthesis and Bidirectional Dynamic Control Overcome Metabolic Bottlenecks for High-Titer l -Ornithine Production in Escherichia coli
l-Ornithine is a versatile amino acid with broad applications in the pharmaceutical, nutraceutical, and food industries. However, its efficient microbial production is constrained by a critical trade-off: excessive blockage of the downstream l-arginine pathway severely impairs cell growth, while intracellular l-ornit...