4DA3
Crystal structure of an intramolecular human telomeric DNA G-quadruplex 21-mer bound by the naphthalene diimide compound MM41.
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | DIAMOND BEAMLINE I04 |
| Synchrotron site | Diamond |
| Beamline | I04 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2011-12-16 |
| Detector | ADSC QUANTUM 315r |
| Wavelength(s) | 0.9795 |
| Spacegroup name | P 31 2 1 |
| Unit cell lengths | 51.310, 51.310, 51.940 |
| Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
| Resolution | 14.810 - 2.400 |
| R-factor | 0.24424 |
| Rwork | 0.242 |
| R-free | 0.28202 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 3sc8 |
| RMSD bond length | 0.008 |
| RMSD bond angle | 1.727 |
| Data reduction software | xia2 |
| Data scaling software | SCALA |
| Phasing software | PHASER |
| Refinement software | REFMAC (5.6.0117) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 25.970 | 2.330 |
| High resolution limit [Å] | 2.270 | 2.270 |
| Rmerge | 0.038 | 0.597 |
| Number of reflections | 3843 | |
| <I/σ(I)> | 23.9 | 2.3 |
| Completeness [%] | 98.9 | 100 |
| Redundancy | 6.7 | 5.8 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 293 | 15% PEG400, 150 mM sodium chloride and 50 mM sodium cacodylate (pH 6.5), VAPOR DIFFUSION, HANGING DROP, temperature 293K |
