Table 1.

Comparison of Young's moduli of various filamentous biopolymers.

filament type	Young's modulus	method	reference
fibrin protofibril	4 MPa	persistence length	Storm et al. (2005)
fibrin fibre−XIIIa	1.7 MPa	bending	Collet et al. (2005)
fibrin fibre+XIIIa	14 MPa	bending	Collet et al. (2005)
F-actin	100 MPa to 1 GPa	bending	Gittes et al. (1993)
microtubule	>1 GPa	bending	Gittes et al. (1993)
intermediate filaments	1.6–8 MPa	various	Wagner et al. (2007)