1QGU
NITROGENASE MO-FE PROTEIN FROM KLEBSIELLA PNEUMONIAE, DITHIONITE-REDUCED STATE
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | SRS BEAMLINE PX9.6 |
Synchrotron site | SRS |
Beamline | PX9.6 |
Temperature [K] | 100 |
Detector technology | IMAGE PLATE |
Collection date | 1997-10-01 |
Detector | MARRESEARCH |
Spacegroup name | C 1 2 1 |
Unit cell lengths | 204.030, 75.300, 163.010 |
Unit cell angles | 90.00, 122.61, 90.00 |
Refinement procedure
Resolution | 50.000 - 1.600 |
R-factor | 0.156 * |
Rwork | 0.156 |
R-free | 0.19900 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 1MIN |
RMSD bond length | 0.014 |
RMSD bond angle | 0.028 |
Data reduction software | DENZO |
Data scaling software | SCALEPACK |
Phasing software | AMoRE |
Refinement software | REFMAC |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 50.000 | 1.630 |
High resolution limit [Å] | 1.600 | 1.600 |
Rmerge | 0.060 | 0.171 |
Number of reflections | 260359 | |
<I/σ(I)> | 22.4 | 5.8 |
Completeness [%] | 95.9 | 96.4 |
Redundancy | 4.1 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | LIQUID DIFFUSION | 8 | 17 * | CRYSTALLIZED ANAEROBICALLY USING LIQUID-LIQUID DIFFUSION TECHNIQUE. FINAL CONCENTRATIONS AFTER EQUILIBRATION WERE: 7% (W/V) PEG 6000, 0.4 - 0.6 M MGCL2, 50 MM TRIS-HCL PH 8, 3.3 MG/ML PROTEIN., pH 8.0 PRIOR TO DATA COLLECTION THE CRYSTAL WAS INCUBATED FOR 24 HOURS IN CRYOPROTECTANT (MOTHER LIQUOR WITH 25% ETHYLENE GLYCOL) CONTAINING 10 MM SODIUM DITHIONITE (A REDUCTANT). |
Crystallization Reagents in Literatures
ID | crystal ID | solution | reagent name | concentration (unit) | details |
1 | 1 | 1 | PEG6000 | 7 (%(w/v)) | |
2 | 1 | 1 | 0.4-0.6 (M) | ||
3 | 1 | 1 | Tris-HCl | 50 (mM) | |
4 | 1 | 2 | protein | 3.3 (mg/ml) |