Use this calculator to estimate the minimum radius (Rmin) of a protein based on its molecular weight (M). Protein size and molecular weight are useful considerations for nanomedicine formulation, nanoparticle bioconjugation, and assay development.
Protein molecular weights & approximate sizes
| M | 5 kDa | 10 kDa | 20 kDa | 50 kDa | 100 kDa | 200 kDa | 500 kDa |
|---|---|---|---|---|---|---|---|
|
Rmin |
1.1 nm | 1.42 nm | 1.78 nm | 2.4 nm | 3.05 nm | 3.84 nm | 5.21 nm |
For more information, see Erickson, Biological Procedure Online vol. 11, no. 1 .
