3GGK
Locating monovalent cations in one turn of G/C rich B-DNA
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | APS BEAMLINE 22-ID |
| Synchrotron site | APS |
| Beamline | 22-ID |
| Temperature [K] | 120 |
| Detector technology | CCD |
| Collection date | 2004-10-21 |
| Detector | MARMOSAIC 300 mm CCD |
| Wavelength(s) | 0.81528 |
| Spacegroup name | C 1 2 1 |
| Unit cell lengths | 32.135, 25.156, 34.113 |
| Unit cell angles | 90.00, 116.24, 90.00 |
Refinement procedure
| Resolution | 30.600 - 0.870 |
| R-factor | 0.11971 |
| Rwork | 0.119 |
| R-free | 0.13430 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | DNA coordinates from PDB Entry 1bd1 (Heinemann and Alings) |
| RMSD bond length | 0.010 |
| RMSD bond angle | 1.833 |
| Data reduction software | HKL-2000 |
| Data scaling software | HKL-2000 |
| Phasing software | CNS |
| Refinement software | REFMAC (5.2.0019) |
Data quality characteristics
| Overall | |
| Low resolution limit [Å] | 30.600 |
| High resolution limit [Å] | 0.784 |
| Rmerge | 0.074 |
| Number of reflections | 19281 |
| <I/σ(I)> | 23 |
| Completeness [%] | 63.9 |
| Redundancy | 6.2 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 277 | MPD, Magnesium acetate, Rubidium acetate, Rubidium hydroxide, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | MPD | ||
| 2 | 1 | 1 | Magnesium acetate | ||
| 3 | 1 | 1 | Rubidium acetate | ||
| 4 | 1 | 1 | Rubidium hydroxide | ||
| 5 | 1 | 2 | MPD | ||
| 6 | 1 | 2 | Magnesium acetate | ||
| 7 | 1 | 2 | Rubidium acetate | ||
| 8 | 1 | 2 | Rubidium hydroxide |
