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 |