6XSV
X-ray structure of a tetragonal crystal form of alpha amylase from Aspergillus oryzae (Tala-Amylase) at 1.65 A resolution
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | ALS BEAMLINE 8.3.1 |
Synchrotron site | ALS |
Beamline | 8.3.1 |
Temperature [K] | 173 |
Detector technology | PIXEL |
Collection date | 2019-02-22 |
Detector | DECTRIS PILATUS 300K |
Wavelength(s) | 1.0 |
Spacegroup name | P 41 21 2 |
Unit cell lengths | 63.126, 63.126, 265.812 |
Unit cell angles | 90.00, 90.00, 90.00 |
Refinement procedure
Resolution | 66.450 - 1.650 |
R-factor | 0.1762 |
Rwork | 0.175 |
R-free | 0.20480 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 2taa |
Data reduction software | XDS |
Data scaling software | Aimless |
Phasing software | SIMBAD |
Refinement software | PHENIX (1.18.2_3874) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 66.450 | 1.680 |
High resolution limit [Å] | 1.650 | 1.650 |
Rmerge | 0.135 | |
Rmeas | 0.141 | |
Rpim | 0.027 | |
Number of reflections | 66065 | 3098 |
<I/σ(I)> | 16.7 | 1.1 |
Completeness [%] | 99.8 | 96.8 |
Redundancy | 124.3 | 41 |
CC(1/2) | 0.999 | 0.190 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 298 | Crystals grown by sitting drop vapor diffusion in Cryschem plates using 0.6 ml reservoirs of 20% PEG 3350 in 0.1 M MES buffer at pH 6.5. Drops composed of equal amounts of the protein at 30 mg/ml in water with the reservoir solution. Crystals grew after about 0ne to two weeks at 298 K |