6V27
Complex of double mutant (T89V,K162T) of E. coli L-asparaginase II with L-Asp
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | ROTATING ANODE |
Source details | RIGAKU MICROMAX-007 HF |
Temperature [K] | 100 |
Detector technology | PIXEL |
Collection date | 2019-02-17 |
Detector | DECTRIS EIGER X 4M |
Wavelength(s) | 1.5418 |
Spacegroup name | C 1 2 1 |
Unit cell lengths | 151.302, 62.412, 141.753 |
Unit cell angles | 90.00, 117.85, 90.00 |
Refinement procedure
Resolution | 26.500 - 2.300 |
R-factor | 0.1643 |
Rwork | 0.160 |
R-free | 0.25130 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 3eca |
RMSD bond length | 0.015 |
RMSD bond angle | 2.070 |
Data reduction software | HKL-2000 |
Data scaling software | HKL-2000 |
Phasing software | PHASER |
Refinement software | REFMAC (5.8.0253) |
Data quality characteristics
Overall | Inner shell | Outer shell | |
Low resolution limit [Å] | 40.000 | 40.000 | 2.340 |
High resolution limit [Å] | 2.300 | 6.240 | 2.300 |
Rmerge | 0.073 | 0.022 | 0.513 |
Rmeas | 0.091 | 0.027 | 0.640 |
Rpim | 0.053 | 0.015 | 0.377 |
Total number of observations | 138795 | ||
Number of reflections | 51978 | 2675 | 2587 |
<I/σ(I)> | 9.9 | ||
Completeness [%] | 98.9 | 97.5 | 98.3 |
Redundancy | 2.7 | 2.9 | 2.5 |
CC(1/2) | 0.998 | 0.722 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.7 | 293 | Crystals grown at 0.17 M sodium citrate (pH 6) and 17-18% (w/v) PEG3350. Soaked for 1-2 minutes (empirically determined for each crystal) in equivalent solution with 0.025% (w/v) glutaraldehyde. Finally transferred and soaked for 10-20 sec in solution containing 40% (w/v) PEG3350, 5 mM L-L-Asp, and 0.17 M sodium citrate (pH 4.7) |