Figure 1From: Non-antibiotic selection systems for soybean somatic embryos: the lysine analog aminoethyl-cysteine as a selection agentA diagram of the aspartate-family biosynthesis pathway. All the key enzymes and their products are indicated. Curved arrows represent feedback inhibition by the end product amino acids. AK: aspartate kinase; DHPS: dihydrodipicolinate synthase; HSD: homoserine dehydrogenase; TDH: threonine dehydrogenase.Back to article page