1GU4
Crystal structure of C/EBPBETA BZIP homodimer bound to a high affinity DNA fragment
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | SPRING-8 BEAMLINE BL45XU |
| Synchrotron site | SPring-8 |
| Beamline | BL45XU |
| Temperature [K] | 90 |
| Detector technology | IMAGE PLATE |
| Collection date | 2001-10-12 |
| Detector | RIGAKU RAXIS V |
| Spacegroup name | C 2 2 21 |
| Unit cell lengths | 100.947, 112.326, 74.401 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 29.950 - 1.800 |
| R-factor | 0.232 |
| Rwork | 0.232 |
| R-free | 0.26600 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1gtw |
| RMSD bond length | 0.004 |
| RMSD bond angle | 0.800 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | X-PLOR |
| Refinement software | CNS (1.0) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 30.000 | 1.780 |
| High resolution limit [Å] | 1.750 | 1.750 |
| Rmerge | 0.094 | 0.455 |
| Number of reflections | 42716 | |
| <I/σ(I)> | 21.7331 | 2.079 |
| Completeness [%] | 99.4 | 98.3 |
| Redundancy | 5.452 | 3.96 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | 6 | 0.2 M POTASSIUM CHLORIDE, 0.01 M MAGNESIUM SULFATE, 10.0% V/V PEG 400, 0.05 M MES BUFFER PH 6.0, PROTEIN-DNA COMPLEX CONCENTRATION WAS 12 MG/ML AND CONTAINS 0.01 M DTT, PROTEIN:DNA RATIO WAS 1:1.2. FOR CRYOPROTECTION THE CONCENTRATION OF PEG 400 WAS ADJUSTED TO 36% V/V |
