3CZW
X-ray structures of the (GUGGUCUGAUGAGGCC) RNA duplex
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | EMBL/DESY, HAMBURG BEAMLINE X11 |
| Synchrotron site | EMBL/DESY, HAMBURG |
| Beamline | X11 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2004-01-26 |
| Detector | MAR CCD 165 mm |
| Wavelength(s) | 0.8115 |
| Spacegroup name | C 1 2 1 |
| Unit cell lengths | 56.035, 31.863, 39.804 |
| Unit cell angles | 90.00, 134.35, 90.00 |
Refinement procedure
| Resolution | 20.000 - 1.400 |
| R-factor | 0.19782 |
| Rwork | 0.197 |
| R-free | 0.22700 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | a short duplex GUCU:CGGA taken from NDB: RR0033 |
| RMSD bond length | 0.019 |
| RMSD bond angle | 2.483 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | MOLREP |
| Refinement software | REFMAC (5.2) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 20.000 | 1.420 |
| High resolution limit [Å] | 1.400 | 1.400 |
| Number of reflections | 9874 | |
| <I/σ(I)> | 19 | 2.5 |
| Completeness [%] | 98.5 | 98.9 |
| Redundancy | 6.4 | 5.3 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6 | 293 | 1.3 M lithium sulphate, 100 mM cacodylate buffer, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | Li2SO4 | ||
| 2 | 1 | 1 | cacodylate | ||
| 3 | 1 | 2 | Li2SO4 |
