Crystal Structure of L-Tryptophan Oxidase VioA Bound to 7-Methyl-L-Tryptophan

A crystal structure of the enzyme VioA from Chromobacterium violaceum bound to a tryptophan analogue demonstrates the promiscuity of the violacein biosynthesis pathway. The research by Hung-En Lai from Imperial College London generated 68 new-to-nature violacein analogues by supplementing engineered E. coli with substrate analogues. This work integrates synthetic biology with synthetic chemistry to rapidly access diverse xenobiotic compounds for therapeutic discovery.

Use Cases

• Analyzing enzyme-substrate interactions based on the crystal structure of VioA bound to 7-Methyl-L-Tryptophan.
• Studying enzyme promiscuity for generating chemical diversity as described in the violacein biosynthesis pathway.
• Designing synthetic biology workflows for producing new-to-nature compounds, as demonstrated with 68 violacein analogues.
• Applying structural insights to engineer biosynthetic pathways for other natural product scaffolds.

Strengths

• Structure provides atomic-level detail of a key enzyme in a promiscuous biosynthesis pathway.
• The underlying research demonstrates a flexible approach generating 68 new-to-nature compounds.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect the specific experimental bias inherent to the single structure described.

Provenance

Source

Imperial College London

Collection Method

X-ray crystallography