Experiment: 2QI2

Crystal structure of the Thermoplasma acidophilum Pelota protein

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	297	100mM tri-sodium citrate (pH5.6), '1.0M mono-ammonium dihydrogen phosphate, pH7.4, VAPOR DIFFUSION, HANGING DROP, temperature 297K
2	VAPOR DIFFUSION, HANGING DROP	7.4	297	100mM tri-sodium citrate (pH5.6), '1.0M mono-ammonium dihydrogen phosphate, pH7.4, VAPOR DIFFUSION, HANGING DROP, temperature 297K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 98.064	α = 90
b = 98.064	β = 90
c = 150.096	γ = 90

Symmetry
Space Group	P 43 21 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	ADSC QUANTUM 315	mirrors	2005-11-19	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 315	mirrors	2005-11-19	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-5A	1.0000	Photon Factory	BL-5A
2	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-5A	0.97945, 0.97965, 0.97178	Photon Factory	BL-5A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.9	15	98.5	0.095	0.095	11.1	19.1	15309	15309			0.4

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)
	2.9	3.04	90.1		0.465	0.465	3.4	13	15309

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.9	14.99	15309	1474	91.6	0.214	0.214	0.2092	0.263	0.2567	RANDOM	70.6

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]
8.43			8.43		-16.87

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24.6
c_angle_deg	1.5
c_improper_angle_d	0.88
c_bond_d	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2495
Nucleic Acid Atoms
Solvent Atoms	17
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing