3GER
Guanine riboswitch bound to 6-chloroguanine
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | ALS BEAMLINE 8.2.2 |
| Synchrotron site | ALS |
| Beamline | 8.2.2 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2005-10-25 |
| Detector | ADSC QUANTUM 315 |
| Wavelength(s) | 0.916 |
| Spacegroup name | C 1 2 1 |
| Unit cell lengths | 132.100, 35.120, 41.810 |
| Unit cell angles | 90.00, 90.03, 90.00 |
Refinement procedure
| Resolution | 19.930 - 1.700 |
| R-factor | 0.216 |
| Rwork | 0.216 |
| R-free | 0.23400 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1U8D |
| RMSD bond length | 0.003 |
| RMSD bond angle | 0.900 |
| Data reduction software | d*TREK |
| Phasing software | CNS |
| Refinement software | CNS |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 20.000 | 1.620 |
| High resolution limit [Å] | 1.560 | 1.560 |
| Rmerge | 0.377 | |
| Number of reflections | 27356 | |
| <I/σ(I)> | 13.1 | 2.1 |
| Completeness [%] | 99.0 | 94 |
| Redundancy | 6.73 | 5.49 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | 22.5 % PEG 3K, 560 mM ammonium acetate, 12 mM cobalt hexammine, 10 mM K+ HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | ammonium acetate | ||
| 2 | 1 | 1 | cobalt hexammine | ||
| 3 | 1 | 1 | PEG 3K | ||
| 4 | 1 | 1 | K+ HEPES | ||
| 5 | 1 | 2 | ammonium acetate | ||
| 6 | 1 | 2 | cobalt hexammine | ||
| 7 | 1 | 2 | PEG 3K | ||
| 8 | 1 | 2 | K+ HEPES |
