1Q0A
Crystal structure of the Zn(II) form of E. coli ZntR, a zinc-sensing transcriptional regulator (space group C222)
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 | C 2 2 2 |
| Unit cell lengths | 84.666, 170.707, 42.208 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 23.590 - 2.000 |
| R-factor | 0.229 |
| Rwork | 0.229 |
| R-free | 0.25800 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | ZntR in P212121 crystal form |
| RMSD bond length | 0.004 |
| RMSD bond angle | 16.500 * |
| 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] | 24.000 | 2.030 |
| High resolution limit [Å] | 1.980 | 1.980 |
| Rmerge | 0.052 | 0.219 |
| Number of reflections | 21722 | |
| <I/σ(I)> | 13 | 4.7 |
| Completeness [%] | 98.6 | 83 |
| Redundancy | 4 | 3.4 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 18 * | Na/K tartrate, Hepes, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | reservoir | sodium potassium phosphate | 0.52 (M) | |
| 2 | 1 | reservoir | HEPES | 0.08 (%(v/v)saturated) | pH7.5 |
| 3 | 1 | drop | protein | 4 (mg/ml) | |
| 4 | 1 | drop | dithiothreitol | 5 (mM) |
