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. 2003 Aug;85(2):804–817. doi: 10.1016/S0006-3495(03)74521-4

TABLE 2.

Elastic, geometric, and electrostatic parameters used in the DNA/protein model

Parameter Definition Value
N Number of the vertices in the circular DNA model 176 (5.28 kbp)
l0 Equilibrium segment length 10 nm
le Kuhn statistical length of DNA 100 nm
k Number of elastic segment for each Kuhn statistical length 10
C Twisting rigidity constant 3.0 × 10−19 erg·cm
kB Boltzmann's constant 1.38 × 10−23 J/K
T Absolute temperature 298 K
g Bending rigidity constant of average DNA pkBT/l0
h Stretching rigidity constant Inline graphic
Δt Time step for Brownian dynamic simulations 600 ps
d0 Radial distance criterion for site juxtaposition 10 nm
cS Monovalent salt concentration 0.2 M
Inline graphic Vertices to which a Hin dimer can bind 1, 34
Inline graphic Vertices to which a Fis dimer can bind 5, 6
Inline graphic Equilibrium tilt-like and roll-like bends on an ihin vertex by a Hin dimer −18°, 0°
Inline graphic Equilibrium tilt-like and roll-like bends on an ifis vertex by a Fis dimer 60°, 0°
Inline graphic Computational tilt-like and roll-like bending rigidity for ihin vertices g, g
Inline graphic Computational tilt-like and roll-like bending rigidity for ifis vertices 3.0 g, 3.0 g
κ Inverse Debye length (salt-dependent, here for 0.2 M) 1.477 nm−1
λ Effective linear charge density of double helix (here for 0.2 M) 40.9 e/nm
ε Relative dielectric constant of aqueous medium 80
Inline graphic Number of effective charges for a DNA segment, a Hin-dimer/DNA complex, and a Fis-dimer/DNA complex, respectively 5, 200, 100
μ Computational short-range repulsion force 35 pN
ρ0 Hydrodynamic radius of a DNA segment of l0 2.24 nm