1Q09
Crystal structure of the Zn(II) form of E. coli ZntR, a zinc-sensing transcriptional regulator (space group I4122)
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | SSRL BEAMLINE BL9-1 |
| Synchrotron site | SSRL |
| Beamline | BL9-1 |
| Temperature [K] | 100 |
| Detector technology | IMAGE PLATE |
| Collection date | 2001-02-01 |
| Detector | MARRESEARCH |
| Wavelength(s) | 0.97 |
| Spacegroup name | I 41 2 2 |
| Unit cell lengths | 83.799, 83.799, 179.993 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 26.770 - 2.500 |
| R-factor | 0.255 |
| Rwork | 0.255 |
| R-free | 0.27800 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | ZntR in crystal form P212121 |
| RMSD bond length | 0.005 |
| RMSD bond angle | 18.900 * |
| Data reduction software | MOSFLM |
| Data scaling software | CCP4 ((SCALA)) |
| Phasing software | AMoRE |
| Refinement software | CNS (1.1) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 27.000 | 2.560 |
| High resolution limit [Å] | 2.500 | 2.500 |
| Rmerge | 0.052 | 0.291 |
| Number of reflections | 11353 | |
| <I/σ(I)> | 13.2 | 2.9 |
| Completeness [%] | 99.1 | 98.7 |
| Redundancy | 14.5 | 14.9 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 18 * | ammonium sulfate, sodium chloride, magnesium chloride, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | drop | protein | 4 (mg/ml) | |
| 2 | 1 | drop | dithiothreitol | 5 (mM) | |
| 3 | 1 | reservoir | ammonium sulfate | 40 (%) | |
| 4 | 1 | reservoir | 20 (mM) | ||
| 5 | 1 | reservoir | 10 (mM) | ||
| 6 | 1 | reservoir | MES | 0.1 (M) | pH6.5 |
