Experiment: 3EXL

Crystal Structure of a p53 Core Tetramer Bound to DNA

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	298	200 mM lithium citrate, 20% PEG 3350, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.12	41.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.418	α = 90
b = 68.103	β = 104.18
c = 34.428	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	298				2008-04-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B		APS	23-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.2	57.354		0.1	14.7	4.9		12509

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.2				0.277	5.6	4.4

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	MOLECULAR REPLACEMENT	2.2	57.354	12145	1246	97	0.202	0.2078	0.253	0.256	33.457

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]
17.816		-5.122	-1.23		-16.586

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	3.055
c_scbond_it	2.142
c_mcangle_it	2.022
c_mcbond_it	1.283

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1517
Nucleic Acid Atoms	205
Solvent Atoms	161
Heterogen Atoms	14

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing