1H9J
Two crystal structures of the cytoplasmic molybdate-binding protein ModG suggest a novel cooperative binding mechanism and provide insights into ligand-binding specificity. Phosphate-grown form with molybdate and phosphate bound
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | ESRF BEAMLINE ID14-3 |
| Synchrotron site | ESRF |
| Beamline | ID14-3 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Collection date | 1998-04-15 |
| Detector | MARRESEARCH |
| Spacegroup name | P 3 2 1 |
| Unit cell lengths | 50.685, 50.685, 79.112 |
| Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
| Resolution | 40.000 - 1.800 |
| R-factor | 0.2 * |
| Rwork | 0.200 |
| R-free | 0.26600 |
| Structure solution method | MAD |
| RMSD bond length | 0.013 |
| RMSD bond angle | 0.034 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | MLPHARE |
| Refinement software | REFMAC |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 44.000 | 1.900 |
| High resolution limit [Å] | 1.800 | 1.800 |
| Rmerge | 0.045 | 0.092 |
| Number of reflections | 10144 | |
| <I/σ(I)> | 8.6 | 5.1 |
| Completeness [%] | 98.7 | 98.1 |
| Redundancy | 3.8 | 3 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION | 8.5 | VAPOUR DIFFUSION. 75% SATURATED KH2PO4 IN 100MM TRIS-HCL PH8.5 WITH 2MM NA2MOO4., pH 8.50 |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | reservoir | potassium phosphate | 75 (%sat) | |
| 2 | 1 | reservoir | Tris-HCl | 100 (mM) | |
| 3 | 1 | reservoir | 2 (mM) |
