6ZA2
Crystal structure of dimeric latent PorU from Porphyromonas gingivalis
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | ALBA BEAMLINE XALOC |
Synchrotron site | ALBA |
Beamline | XALOC |
Temperature [K] | 110 |
Detector technology | PIXEL |
Collection date | 2017-07-15 |
Detector | DECTRIS PILATUS3 6M |
Wavelength(s) | 0.9817 |
Spacegroup name | P 61 2 2 |
Unit cell lengths | 171.700, 171.700, 440.400 |
Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
Resolution | 88.480 - 3.350 |
R-factor | 0.203 |
Rwork | 0.202 |
R-free | 0.24300 |
Structure solution method | SAD |
RMSD bond length | 0.010 |
RMSD bond angle | 1.150 |
Data reduction software | XDS |
Data scaling software | XSCALE |
Phasing software | SHELXDE |
Refinement software | BUSTER (2.10.3) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 88.480 | 3.550 |
High resolution limit [Å] | 3.350 | 3.350 |
Rmerge | 0.152 | 1.899 |
Rmeas | 0.154 | 1.923 |
Number of reflections | 56055 | 8750 |
<I/σ(I)> | 22.71 | 3.12 |
Completeness [%] | 100.0 | 100 |
Redundancy | 38.5 | 39.626 |
CC(1/2) | 1.000 | 0.844 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 293 | The best crystals of full-length native and selenomethionine-derivatized PorU were obtained at 20 degrees in drops with 1 microL of protein solution (at 5-10 mg per mL in 20 mM Tris-HCl, 150 mM NaCl, pH 7.5) and 1 microL of reservoir solution (100 mM HEPES, 200 mM calcium chloride, 28-32 per cent v/v PEG600, pH 7.5). Crystals were cryoprotected by rapid passage through drops containing increasing amounts of glycerol (5-to-20 per cent v/v). |