TAA1

TAA1, also known as WEI8, is an enzyme in Arabidopsis thaliana that plays a critical role in auxin biosynthesis, thereby influencing plant growth and development. TAA1 facilitates a key reaction in the auxin biosynthesis pathway by converting L-tryptophan into indole-3-acetic acid (IPA), which is a precursor to the auxin IAA (indole-3-acetic acid). This enzyme influences various aspects of plant growth and development, including embryonic development, the formation of lateral roots, the preservation of meristematic tissue, and the directionality of plant growth. TAA1 is essential for plant development and its ability to adapt to environmental changes by controlling the synthesis and distribution of auxin. The enzyme's activity is modulated by post-translational modifications, such as phosphorylation, which can influence TAA1's activity and stability, thus providing a mechanism to regulate auxin synthesis.

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Recombinant Arabidopsis thaliana L-tryptophan--pyruvate aminotransferase 1 (TAA1)