Developing biosensors to monitor and regulate intracellular biosynthesis pathways can significantly enhance natural product yields in microbial cell factories. This study created a novel biosensor in Saccharomyces cerevisiae to respond to p-coumaric acid, a critical precursor in the biosynthesis of polyphenols and flavonoids. This biosensor was constructed by expressing the BsPadR repressor from Bacillus subtilis and engineering hybrid promoters. Notably, the P BS1-CCW12 hybrid promoter exhibited tight regulation by BsPadR and enhanced activity in response to p-coumaric acid. However, excessive BsPadR expression negatively impacted yeast growth, which was mitigated by using weaker promoters, P BST1 and P ERG9 . Furthermore, the impact of nuclear localization signal (SV40-NLS) positioning on BsPadR functionality was explored, revealing that fusion of an SV40-NLS at the C-terminus of BsPadR enhanced the biosensor's performance. To validate its utility, we applied this system to dynamically regulate CrtE (geranylgeranyl pyrophosphate synthase), a key enzyme in lycopene biosynthesis. By coupling p-coumaric acid production with lycopene biosynthesis, we enabled high-throughput colorimetric screening for enzyme evolution and strain selection. This novel biosensor serves as a valuable tool for future studies aimed at optimizing the production of p-coumaric acid and its derivatives in S. cerevisiae, thereby advancing the efficiency of biosynthetic processes in microbial cell factories.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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