1PJT
The structure of the Ser128Ala point-mutant variant of CysG, the multifunctional methyltransferase/dehydrogenase/ferrochelatase for siroheme synthesis
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | SSRL BEAMLINE BL9-2 |
| Synchrotron site | SSRL |
| Beamline | BL9-2 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 2003-03-10 |
| Detector | ADSC QUANTUM 315 |
| Wavelength(s) | 0.979 |
| Spacegroup name | P 21 21 21 |
| Unit cell lengths | 59.539, 120.319, 130.036 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 20.000 * - 2.800 |
| R-factor | 0.224 |
| Rwork | 0.226 |
| R-free | 0.29000 * |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | native CysG PDB entry 1PJQ |
| RMSD bond length | 0.012 |
| RMSD bond angle | 1.820 * |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | CNS |
| Refinement software | CNS (1.1) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 20.000 | 2.900 |
| High resolution limit [Å] | 2.800 | 2.800 |
| Rmerge | 0.086 * | 0.292 * |
| Number of reflections | 22521 | |
| <I/σ(I)> | 17.3 | 4.7 |
| Completeness [%] | 93.5 | 95 |
| Redundancy | 4 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | Vapor diffusion * | 4.5 * | 293 | PEG200, phosphate/citrate, sodium chloride, 2-mercaptoethanol, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | drop | protein | 25 (mg/ml) | |
| 2 | 1 | reservoir | PEG200 | 30 (%(v/v)) | |
| 3 | 1 | reservoir | sodium acetate | 200 (mM) | pH4.5 |
| 4 | 1 | reservoir | 200 (mM) | ||
| 5 | 1 | reservoir | beta-mercaptoethanol | 1 (%(v/v)) |
