2PE5
Crystal Structure of the Lac Repressor bound to ONPG in repressed state
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | ROTATING ANODE |
| Source details | RIGAKU |
| Temperature [K] | 100 |
| Detector technology | IMAGE PLATE |
| Collection date | 2006-03-19 |
| Detector | MAR scanner 300 mm plate |
| Wavelength(s) | 1.5418 |
| Spacegroup name | H 3 2 |
| Unit cell lengths | 253.080, 253.080, 203.247 |
| Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
| Resolution | 19.980 - 3.500 |
| R-factor | 0.23616 |
| Rwork | 0.233 |
| R-free | 0.28656 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1efa |
| RMSD bond length | 0.009 |
| RMSD bond angle | 1.627 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | PHASER |
| Refinement software | REFMAC (5.2.0019) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 20.000 | 3.600 |
| High resolution limit [Å] | 3.500 | 3.500 |
| Rmerge | 0.176 | 0.504 |
| Number of reflections | 29717 | |
| <I/σ(I)> | 7.3 | 4.37 |
| Completeness [%] | 99.9 | 99.7 |
| Redundancy | 9.1 | 6.9 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 281 | 1.8 M Ammonium Sulfate, 0.1 M Hepes pH 7.5. 11% PEG 400, 14% glycerol, 10X ONPG, VAPOR DIFFUSION, HANGING DROP, temperature 281K |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | Ammonium Sulfate | ||
| 10 | 1 | 2 | ONPG | ||
| 2 | 1 | 2 | Ammonium Sulfate | ||
| 3 | 1 | 1 | Hepes | ||
| 4 | 1 | 2 | Hepes | ||
| 5 | 1 | 1 | PEG 400 | ||
| 6 | 1 | 2 | PEG 400 | ||
| 7 | 1 | 1 | glycerol | ||
| 8 | 1 | 2 | glycerol | ||
| 9 | 1 | 1 | ONPG |
