1B21
DELETION OF A BURIED SALT BRIDGE IN BARNASE
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | ROTATING ANODE |
Source details | ELLIOTT GX-13 |
Temperature [K] | 100 |
Detector technology | IMAGE PLATE |
Collection date | 1997-05 |
Detector | MARRESEARCH |
Spacegroup name | P 32 |
Unit cell lengths | 57.780, 57.780, 81.420 |
Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
Resolution | 19.000 - 2.000 |
R-factor | 0.188 * |
Rwork | 0.188 |
R-free | 0.26800 |
Structure solution method | OTHER |
RMSD bond length | 0.006 |
RMSD bond angle | 0.022 |
Data reduction software | iMOSFLM |
Data scaling software | CCP4 ((SCALA)) |
Phasing software | X-PLOR |
Refinement software | REFMAC |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 21.320 | 2.120 |
High resolution limit [Å] | 2.000 * | 2.010 |
Rmerge | 0.067 | 0.144 |
Number of reflections | 18526 | |
<I/σ(I)> | 10.06 | 5.1 |
Completeness [%] | 91.4 | 59.3 |
Redundancy | 1.8 | 1.6 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | Vapor diffusion, hanging drop * | 7.5 | 288 * | DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH |
Crystallization Reagents
ID | crystal ID | solution ID | reagent name | concentration | details |
1 | 1 | 1 | ZN SULFATE | ||
2 | 1 | 1 | NH4 SULFATE | ||
3 | 1 | 2 | ZN SULFATE | ||
4 | 1 | 2 | NH4 SULFATE | ||
5 | 1 | 2 | NH4OH | ||
6 | 1 | 2 | NH4 PHOSPHATE |
Crystallization Reagents in Literatures
ID | crystal ID | solution | reagent name | concentration (unit) | details |
1 | 1 | drop | protein | 8-12 (mg/ml) | |
2 | 1 | drop | 6 (mM) | ||
3 | 1 | drop | ammonium sulfate | 0.1 (M) | |
4 | 1 | reservoir | ammonium phosphate | 2.58-2.73 (M) | |
5 | 1 | reservoir | 1-2 (mM) | ||
6 | 1 | reservoir | ammonium sulfate | 0.15-0.30 (M) | |
7 | 1 | reservoir | 5-10 (mM) |