1Q2R
Chemical trapping and crystal structure of a catalytic tRNA guanine transglycosylase covalent intermediate
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | APS BEAMLINE 14-BM-C |
| Synchrotron site | APS |
| Beamline | 14-BM-C |
| Spacegroup name | I 4 |
| Unit cell lengths | 264.856, 264.856, 55.911 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 30.000 - 2.900 |
| Rwork | 0.181 |
| R-free | 0.23000 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1pud |
| RMSD bond length | 0.007 * |
| RMSD bond angle | 1.300 * |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | AMoRE |
| Refinement software | CNS (1.1) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 30.000 | |
| High resolution limit [Å] | 2.900 | 2.900 * |
| Rmerge | 0.069 | 0.297 * |
| Number of reflections | 43547 * | 4278 * |
| Completeness [%] | 99.6 * | 98.7 * |
| Redundancy | 6.6 * | 5.1 * |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | Vapor diffusion * | 7.5 | 4 * | PEG 6000, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K |
Crystallization Reagents
| ID | crystal ID | solution ID | reagent name | concentration | details |
| 1 | 1 | 1 | PEG 6000 | ||
| 2 | 1 | 1 | H2O | ||
| 3 | 1 | 2 | PEG 6000 | ||
| 4 | 1 | 2 | H2O |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | reservoir | HEPES | 100 (mM) | pH7.5 |
| 2 | 1 | reservoir | PEG6000 | 28 (%(w/v)) | |
| 3 | 1 | reservoir | 100 (mM) | ||
| 4 | 1 | reservoir | spermine | 10 (mM) |
