1S0B
Crystal structure of botulinum neurotoxin type B at pH 4.0
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | SYNCHROTRON |
| Source details | NSLS BEAMLINE X25 |
| Synchrotron site | NSLS |
| Beamline | X25 |
| Temperature [K] | 100 |
| Detector technology | CCD |
| Detector | ADSC QUANTUM 315 |
| Wavelength(s) | 1.0 |
| Spacegroup name | P 1 21 1 |
| Unit cell lengths | 76.230, 123.150, 95.560 |
| Unit cell angles | 90.00, 113.18, 90.00 |
Refinement procedure
| Resolution | 50.000 - 2.000 |
| R-factor | 0.2031 |
| Rwork | 0.203 |
| R-free | 0.23400 * |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1epw |
| RMSD bond length | 0.006 |
| RMSD bond angle | 1.210 * |
| Data reduction software | MARMAD |
| Data scaling software | SCALEPACK |
| Phasing software | AMoRE |
| Refinement software | CNS (1.0) |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 50.000 | 2.060 |
| High resolution limit [Å] | 2.000 | 2.000 |
| Rmerge | 0.059 | 0.218 |
| Total number of observations | 284241 * | |
| Number of reflections | 97573 | |
| <I/σ(I)> | 11 | |
| Completeness [%] | 89.1 | 69.4 |
| Redundancy | 3 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | Vapor diffusion * | 6 * | 298 | Swaminathan, S., (2000) Acta Crystallogr., Sect.D, 56, 1024. * |
Crystallization Reagents in Literatures
| ID | crystal ID | solution | reagent name | concentration (unit) | details |
| 1 | 1 | drop | protein | 8 (mg/ml) | |
| 2 | 1 | reservoir | MES | 100 (mM) | pH6.0 |
| 3 | 1 | reservoir | PEG6000 |
