Experiment: 2OQQ

Crystal structure of HY5 leucine zipper homodimer from Arabidopsis thaliana

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	296	0.1M Bis-Tris pH6.0 0.1M MgCl2 25% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.344	α = 90
b = 24.583	β = 100.03
c = 76.517	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray						M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PAL/PLS BEAMLINE 6B	1.12714, 0.97880, 0.97895, 0.97114	PAL/PLS	6B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2	50	97.7	0.095	9.1	2.9		6080

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2	2.07	87.8		0.392			553

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SIRAS	2	20	5680	621	91.3	0.243	0.2422	0.296	0.2958	38.094

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
1.784		-4.981	3.952		-5.735

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	4.061
c_mcangle_it	2.597
c_scbond_it	2.55
c_mcbond_it	1.607
c_angle_d	1.242
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	694
Nucleic Acid Atoms
Solvent Atoms	102
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing
RESOLVE	phasing
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection