2QV4
Human pancreatic alpha-amylase complexed with nitrite and acarbose
Experimental procedure
| Experimental method | SINGLE WAVELENGTH |
| Source type | ROTATING ANODE |
| Source details | RIGAKU RU300 |
| Temperature [K] | 100 |
| Detector technology | IMAGE PLATE |
| Collection date | 2004-08-29 |
| Detector | MAR scanner 345 mm plate |
| Wavelength(s) | 1.5418 |
| Spacegroup name | P 21 21 21 |
| Unit cell lengths | 51.859, 67.723, 130.099 |
| Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
| Resolution | 20.330 - 1.970 |
| Rwork | 0.176 |
| R-free | 0.22410 |
| Structure solution method | MOLECULAR REPLACEMENT |
| Starting model (for MR) | 1hny |
| RMSD bond length | 0.008 |
| RMSD bond angle | 1.505 |
| Data reduction software | DENZO |
| Data scaling software | SCALEPACK |
| Phasing software | CNS |
| Refinement software | CNS |
Data quality characteristics
| Overall | Outer shell | |
| Low resolution limit [Å] | 30.000 | 2.000 |
| High resolution limit [Å] | 1.970 | 1.970 |
| Rmerge | 0.040 | 0.170 |
| Number of reflections | 32323 | |
| <I/σ(I)> | 42.5 | 14 |
| Completeness [%] | 97.6 | 94.5 |
| Redundancy | 4.5 | 4 |
Crystallization Conditions
| crystal ID | method | pH | temperature | details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 300 | 60% 2-methylpentane-2,4-diol, 100 mM cacodylate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 300K |
