Table 2.
The Averaged Widths and Electrostatic Potentials of the Major and Minor Grooves of the Unbound DNA in Solution
| Minor Groove |
Major Groove |
|||||
|---|---|---|---|---|---|---|
| dna-x-S | dna-c-NS | t | dna-x-S | dna-c-NS | t | |
| Width (Å) | ||||||
| 5 TA/TA | 7.5 (1.0) | 7.7 (1.0) | 1.5 | 11.5 (1.4) | 11.2 (1.4) | 2.3 |
| 6 AT/AT (AC/GT) | 7.4 (1.0) | 7.7 (1.0) | 2.6 | 10.8 (1.4) | 11.0 (1.5) | 0.1 |
| 7 TT/AA (CC/GG) | 7.2 (1.0) | 7.5 (1.0) | 3.8 | 10.3 (1.5) | 10.6 (1.6) | 0.4 |
| 8 TT/AA (CC/GG) | 7.3 (1.1) | 7.8 (0.9) | 4.5 | 11.7 (1.6) | 11.7 (1.7) | 0.0 |
| 9 TA/TA (CG/CG) | 7.9 (1.1) | 8.3 (1.0) | 3.9 | 11.7 (1.4) | 10.5 (1.6) | 5.3 |
| 10 AT/AT (GT/AC) | 8.3 (1.1) | 8.4 (1.1) | 0.7 | 12.1 (1.4) | 10.9 (1.4) | 5.2 |
| 11 TA/TA | 7.8 (1.1) | 7.6 (1.0) | 2.7 | 11.6 (1.4) | 11.0 (1.4) | 3.2 |
| elepot (kBT/e) | ||||||
| 5 TA/TA | −6.4 (1.0) | −6.4 (1.1) | 0.3 | −3.0 (1.1) | −3.3 (1.0) | 0.4 |
| 6 AT/AT (AC/GT) | −6.8 (1.3) | −6.2 (1.0) | 3.6 | −3.7 (1.3) | −4.7 (0.9) | 6.1 |
| 7 TT/AA (CC/GG) | −7.2 (1.4) | −4.4 (2.3) | 10.8 | −3.2 (0.8) | −4.6 (1.3) | 8.2 |
| 8 TT/AA (CC/GG) | −7.4 (1.6) | −4.3 (2.6) | 9.2 | −3.9 (1.3) | −3.4 (0.9) | 3.8 |
| 9 TA/TA (CG/CG) | −6.6 (1.2) | −4.1 (2.4) | 9.2 | −4.0 (1.3) | −2.2 (0.8) | 12.4 |
| 10 AT/AT (GT/AC) | −6.1 (0.9) | −4.0 (2.2) | 7.3 | −4.2 (2.4) | −3.0 (1.4) | 6.5 |
| 11 TA/TA | −6.2 (0.9) | −6.1 (0.9) | 0.5 | −4.2 (2.1) | −4.4 (1.2) | 1.4 |
Student’s t-test: tc (α = 0.01, df = 200) = 2.6. The basepair step in parentheses is for dna-c-NS. Data in parentheses are the standard deviations. t-values larger than tc are in bold.