Background: Biosyntheses often fluctuate with the state of the cell in the cell cycle and on the capacity of the cell to access and metabolize a carbon source. Visualization of substrate uptake by individual cells, together with the simultaneous analysis of proliferation activity and the proportion of dead cells, facilitate reliable and quasi-online process optimization.
Methods: Flow cytometry and Hoechst 33342 staining were used to follow proliferation activity of living Saccharomyces cerevisiae cells, whereas 2-NBD-glucose was employed to analyze the cells' substrate affinity. Propidium iodide was used to determine the proportion of dead cells. Calibration and verification experiments were performed with cells grown batch-wise as well as in transient state regimes.
Results: A new and rapid three-color assay was developed and tested under varying microenvironmental conditions.
Conclusions: Live/dead cell states and the affinity to 2-NBD-glucose vs. proliferation states were determined during respiratory and/or fermentative modes of metabolism.
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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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