1FQ2
CRYSTAL STRUCTURE ANALYSIS OF THE POTASSIUM FORM OF B-DNA DODECAMER CGCGAATTCGCG
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | NSLS BEAMLINE X26C |
| Synchrotron site | NSLS |
| Beamline | X26C |
| Temperature [K] | 100 |
| Detector technology | AREA DETECTOR |
| Spacegroup name | P 21 21 21 |
| Unit cell lengths | 25.588, 40.818, 66.673 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 10.000 - 1.200 |
| R-factor | 0.141 |
| R-free | 0.21500 |
| Structure solution method | AB INITIO |
| RMSD bond length | 0.016 |
| RMSD bond angle | 0.037 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | SHELXS |
| Refinement software | SHELXL-97 |
Data quality characteristics
| Overall | |
| Low resolution limit [Å] | 10.000 |
| High resolution limit [Å] | 1.200 |
| Total number of observations | 489992 * |
| Number of reflections | 19368 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 22 * | MgCl2, Potassium Cacodylate, Spermine, MPD, DNA. pH 6.5, VAPOR DIFFUSION, SITTING DROP at 295K, VAPOR DIFFUSION, SITTING DROP |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | Potassium Cacodylate | ||
| 2 | 1 | 1 | Spermine | ||
| 3 | 1 | 1 | MgCl2 | ||
| 4 | 1 | 1 | MPD | ||
| 5 | 1 | 2 | MPD |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | drop | protein | 1.0 (mM) | |
| 2 | 1 | drop | potassium cacodylate | 19 (mM) | |
| 3 | 1 | drop | 10 (mM) | ||
| 4 | 1 | drop | spermine tetrahydrochloride | 8.9 (mM) | |
| 5 | 1 | drop | 4.8 (%) | ||
| 6 | 1 | reservoir | MPD | 50 (%) |
