3IU3
Crystal structure of the Fab fragment of therapeutic antibody Basiliximab in complex with IL-2Ra (CD25) ectodomain
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | SSRF BEAMLINE BL17U |
Synchrotron site | SSRF |
Beamline | BL17U |
Temperature [K] | 100 |
Detector technology | CCD |
Collection date | 2009-07-15 |
Detector | RAYONIX MX225HE |
Wavelength(s) | 0.9796 |
Spacegroup name | P 65 2 2 |
Unit cell lengths | 137.051, 137.051, 459.095 |
Unit cell angles | 90.00, 90.00, 120.00 |
Refinement procedure
Resolution | 47.381 - 2.900 |
R-factor | 0.2172 |
Rwork | 0.215 |
R-free | 0.26200 |
Structure solution method | MOLECULAR REPLACEMENT |
Starting model (for MR) | 1mim |
RMSD bond length | 0.006 |
RMSD bond angle | 1.054 |
Data reduction software | HKL-2000 |
Data scaling software | HKL-2000 |
Phasing software | PHASER |
Refinement software | PHENIX ((phenix.refine)) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 50.000 | 3.000 |
High resolution limit [Å] | 2.900 | 2.900 |
Rmerge | 0.165 | 0.561 |
Number of reflections | 56779 | |
<I/σ(I)> | 17 | 2 |
Completeness [%] | 98.0 | 94.5 |
Redundancy | 14.8 | 10 |
Crystallization Conditions
crystal ID | method | pH | temperature | details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 293 | 0.2 M KCl, 0.05 M HEPES pH 7.5, and 45% pentaerythritol propoxylate (5/4 PO/OH), VAPOR DIFFUSION, HANGING DROP, temperature 293K |