A quantitative model of a cooperative two-state equilibrium in DNA: experimental tests, insights, and predictions - CORRIGENDUM

In the aforementioned article, the author and Publisher would like to correct four errors. These are as follows:

1. (1) On the second line of page 6 the formula should read: κ_{β af} = (P_f/ h_a) k _BT

2. (2) The third row of Table 3 should be f_{b cir} and not F_{b cir}. A revised table 3 is below:

   Table 3. Calculated properties of circular DNAs with 205–4362 bp in ~40 mM univalent cations plus 10 mM Mg²⁺ at 310 K.

   

   Beginning with α_lin for a long linear DNA reckoned from Eq. (11), values were computed as described above for the 181 bp DNA. E_T is reckoned from Eq. (16) and compared with experimental values obtained from topoisomer distributions (Horowitz and Wang, 1984) (HW). The dual values of the experimental E_T and helix repeat, H, were obtained by least-squares fitting of the experimental topoisomer ratios for 205, 207, and 217 bp DNAs to equations (6b) and (5), respectively, of HW.

3. (3) In Table 6, the final value should be 4.87 instead of 4.87s. A revised table 6 is below:

   Table 6. Calculated properties of different DNA models in 0.1 M NaCl at 293 K.

   

   The Nspr are the numbers of springs between the subunits of each model. The n ₁ are the mean number of bp in the central domain, which is state b in Control DNA, and is state a in Insert DNA. The n2 and n3 are the numbers of subunits in the second and third domains outward from the center (counting those on both sides). The α_{u 1} and α_{u 2} values are reckoned as described previously (Schurr, 2019b).

4. (4) On page 10, lines 22–24 of the right-hand column should read: “This implies a non-Gaussian distribution of writhe in the unconstrained DNA, which arises from thermally accessible figure eight configurations in addition to slightly writhed circles.”

The author and Publisher apologise for these errors.