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🦠 Cell Economics

A runnable adaptation of Economic Principles in Cell Biology by the Economic Cell Collective, licensed CC BY 4.0 (Zenodo). This adaptation is CC BY-SA 4.0.

A cell spends a finite protein budget on catabolism, anabolism, and growth. Read it as an economy: allocation, cost, and trade-off, made runnable.

nutrient catabolism enzymes φc precursor anabolism ribosomes φa protein protein builds the machines that make protein → exponential growth
Chapter
1. The economy of the cell The cell as a metabolic system that spends resources to rebuild itself. The allocation trade-off, made runnable. 🦠
2. An inventory of the cell The proteome-dominated budget in numbers, and the ribosomes it takes to rebuild it each generation. 🦠
3. Cell metabolism Two laws per reaction: thermodynamics sets the direction, Michaelis-Menten kinetics sets the speed. 🦠
4. Metabolic flux distributions Steady state as Nv = 0, and the flux cone of everything the network could run. 🦠
5. Optimization of metabolic fluxes Flux balance analysis as a linear program, solved in-browser. One bound flips the strategy. 🦠
6. The enzyme cost of a flux Flux has a price in protein. Why the highest-yield pathway is often the wrong one. 🦠
7. Principles of cell growth Ribosomes make ribosomes. The growth laws as what optimal allocation looks like plotted. 🦠
8. Microeconomics of cell metabolism The cell as a consumer: overflow metabolism, Giffen goods, and diminishing returns. 🦠
The runnable models here are deliberately small: two or three reactions, solved in the browser. For genome-scale models use COBRApy; for the full treatment, read the source book.
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