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This is a Quantitative Study study (also classified as: Experimental Study).

October 7, 2025Open Access

Tryptophanase Mining and Characterization Towards the Biological Production of Indole Derivatives

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Characterization of tryptophanases facilitates indole synthesis in enzymatic cascades, suggesting potential industrial applications.

Characterizing 21 tryptophanases reveals diverse optimal conditions for enzymatic reactions, enhancing industrial applications.
Utilizing machine learning to visualize tryptophanase sequence space uncovered two additional regions of interest for further study.
Biochemical characterization yielded a promising candidate, PreTIL, achieving 3.0 ± 0.8 mM indigo formation in situ during enzymatic cascade.
This approach outlines a pathway for producing biobased indigo, though challenges in biocatalytic processes need addressing.

Boer et al. (2025) studied this question.

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