Cell growth underlies nearly all eukaryotic physiology, yet its quantitative principles remain unclear. Here, using single-molecule ribosome tracking, spike-in RNA sequencing and quantitative proteomics across 15 nutrient-limited conditions in budding yeast, we define how growth is controlled in the budding yeast Saccharomyces cerevisiae. Ribosome concentration scales linearly with growth rate, while peptide elongation speed remains constant at approximately nine amino acids per second. While elongation is not a regulatory lever, total mRNA concentration increases proportionally with ribosomes to accelerate growth. A simple kinetic model of mRNA-ribosome binding accurately predicts the fraction of active ribosomes, growth rate and responses to transcriptional or size perturbations. Consistent with this model, transient inhibition of mRNA degradation boosts growth by elevating mRNA concentration. These results reveal that eukaryotic cells accelerate proliferation primarily by proportionally scaling mRNA and ribosome abundance, establishing a quantitative framework for understanding eukaryotic biosynthesis.
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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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