cell-free-expression

SKILL.md

| System | Best For | Yield | PTMs | Disulfides | Cost |

| E. coli extract | Rapid prototyping, prokaryotic proteins | High (100-400 μg/mL) | None | Poor (reducing) | Low | | E. coli PURE | Defined conditions, unnatural AAs | Medium (50-150 μg/mL) | None | Controllable | High | | Wheat germ | Eukaryotic proteins, membrane proteins | High (100-500 μg/mL) | Limited | Moderate | Medium |

| Rabbit reticulocyte | Mammalian proteins, post-translational studies | Low (10-50 μg/mL) | Some | Poor | High | | Insect (Sf21) | Glycoproteins, complex folds | Medium (50-100 μg/mL) | Glycosylation | Good | High | | HeLa/CHO | Native mammalian proteins | Low (10-50 μg/mL) | Full mammalian | Good | Very High |

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