1IA4
Candida albicans dihydrofolate reductase complex in which the dihydronicotinamide moiety of dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH) is displaced by 5-{[4-(4-MORPHOLINYL)PHENYL]SULFANYL}-2,4-QUINAZOLINEDIAMIN (GW2021)
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | ROTATING ANODE |
Source details | ELLIOTT GX-21 |
Temperature [K] | 293 |
Detector technology | AREA DETECTOR |
Collection date | 1989-08-11 |
Detector | XENTRONICS |
Spacegroup name | P 1 21 1 |
Unit cell lengths | 77.050, 67.090, 38.540 |
Unit cell angles | 90.00, 93.43, 90.00 |
Refinement procedure
Resolution | 10.000 - 1.850 |
R-factor | 0.159 |
Rwork | 0.159 |
Structure solution method | DIRECT REPLACEMENT |
Starting model (for MR) | CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9) |
RMSD bond length | 0.021 |
RMSD bond angle | 0.035 |
Data reduction software | X-GEN |
Data scaling software | X-GEN |
Refinement software | PROFFT |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 25.000 | 1.960 |
High resolution limit [Å] | 1.850 | 1.850 |
Rmerge | 0.074 | 0.293 |
Number of reflections | 32740 | |
<I/σ(I)> | 7.77 | 1.3 |
Completeness [%] | 97.6 | 91.1 |
Redundancy | 3.58 | 1.98 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 4 * | DIHYDRO-NICOTINAMIDE-ADENINE- DINUCLEOTIDE PHOSPHATE (NADPH), 5-{[4-(4-MORPHOLINYL) PHENYL]SULFANYL}-2,4-QUINAZOLINEDIAMINE (GW2021), PEG-3350, POTASSIUM 4-MORPHILINEETHANESULFONIC ACID, DITHIOTHREITOL A THREE-FOLD EXCESS OF GW2021 AND THREE-FOLD EXCESS OF NADPH WAS ADDED TO THE C. ALBICANS DHFR SOLUTION AND LET STAND 277K OVERNIGHT. 17-20 MG/ML C. ALBICANS DHFR IN 50 UM GW995, 50 UM NADPH, 20 MM KMES, 1 MM DTT, PH 6.5 WAS MIXED WITH AN EQUAL PART OF 26 - 34% PEG-3350, THE RESERVOIR SOLUTION. , VAPOR DIFFUSION, HANGING DROP |
Crystallization Reagents in Literatures
ID | crystal ID | solution | reagent name | concentration (unit) | details |
1 | 1 | drop | protein | 17-20 (mg/ml) | |
2 | 1 | drop | KMES | 50 (mM) | |
3 | 1 | drop | NADPH | 1 (mM) | |
4 | 1 | drop | dithiothreitol | 1 (mM) | |
5 | 1 | reservoir | PEG3350 | 26-34 (%) |