Table 1. Physical characteristics of actin
CharacteristicMeasurementReference
Length increment per actin monomerδ = 2.75 nmHolmes et al., 1990
Diameter of filamentous actinε = 7–9 nmHolmes et al., 1990
Polymerization force of actinfa between 1 and 9 pNSee Fig. 2
Concentration of actin monomersC = ∼15–500 µM in nonmuscle cells;
C = ∼30–60 µM in fission yeast
Wu and Pollard, 2005; Footer et al., 2007