Experiment: 2QSS

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2QSP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.3	298	0.3 M Na Cacodylate 17% PEG 3350, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.24	45.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.999	α = 90
b = 78.381	β = 90
c = 109.247	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	CCD	BRUKER PROTEUM-R	MONTEL OPTICS	2006-07-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.75	63.63	98.6				59622

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.8	83.5			4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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		THROUGHOUT	2QSP	1.75	63.63	56091	2878	98.42	0.18	0.18	0.177	0.225	RANDOM	23.193

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]
0.31			0.39		-0.7

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.906
r_dihedral_angle_3_deg	15.031
r_dihedral_angle_4_deg	14.843
r_dihedral_angle_1_deg	4.917
r_scangle_it	2.924
r_scbond_it	1.995
r_angle_refined_deg	1.38
r_mcangle_it	1.235
r_mcbond_it	0.829
r_nbtor_refined	0.304

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.906
r_dihedral_angle_3_deg	15.031
r_dihedral_angle_4_deg	14.843
r_dihedral_angle_1_deg	4.917
r_scangle_it	2.924
r_scbond_it	1.995
r_angle_refined_deg	1.38
r_mcangle_it	1.235
r_mcbond_it	0.829
r_nbtor_refined	0.304
r_nbd_refined	0.218
r_symmetry_vdw_refined	0.209
r_xyhbond_nbd_refined	0.152
r_symmetry_hbond_refined	0.152
r_chiral_restr	0.107
r_metal_ion_refined	0.107
r_bond_refined_d	0.014
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4386
Nucleic Acid Atoms
Solvent Atoms	617
Heterogen Atoms	180

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
SAINT	data reduction
SCALEPACK	data scaling

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.