Experiment: 3CAX

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	298	0.2M Ammonium(tri-)citrate pH 7.0, 20% PEG 3350, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.73	67.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.84	α = 90
b = 119.534	β = 90
c = 181.91	γ = 90

Symmetry
Space Group	I 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MAR CCD 165 mm		2008-02-01	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 315		2008-01-25	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4C	0.9793	NSLS	X4C
2	SYNCHROTRON	NSLS BEAMLINE X29A	0.9790	NSLS	X29A

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	2.43	50	99	0.107	7.7	12	24050	24050

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1,2	2.43	2.49	98.6		0.744	0.547	2.74	12.2	2337

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.43	34.69	24031	24031	1234	95.99	0.188	0.188	0.185	0.226	RANDOM	56.504

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]
1.2			0.4		-1.6

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.617
r_dihedral_angle_3_deg	16.874
r_dihedral_angle_4_deg	13.563
r_scangle_it	7.656
r_mcangle_it	5.876
r_scbond_it	5.576
r_dihedral_angle_1_deg	5.144
r_mcbond_it	4.403
r_angle_refined_deg	1.29
r_nbtor_refined	0.317

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.617
r_dihedral_angle_3_deg	16.874
r_dihedral_angle_4_deg	13.563
r_scangle_it	7.656
r_mcangle_it	5.876
r_scbond_it	5.576
r_dihedral_angle_1_deg	5.144
r_mcbond_it	4.403
r_angle_refined_deg	1.29
r_nbtor_refined	0.317
r_symmetry_hbond_refined	0.249
r_nbd_refined	0.224
r_symmetry_vdw_refined	0.217
r_xyhbond_nbd_refined	0.173
r_chiral_restr	0.078
r_bond_refined_d	0.013
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2947
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
SHELXD	phasing
SHELXE	model building

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.