3OQ2 | pdb_00003oq2

Structure of a CRISPR associated protein Cas2 from Desulfovibrio vulgaris

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	Protein solution 0.85 mM DvuCas2, reservoir solution 1 M lithium sulfate, 0.5 M ammonium sulfate and 0.1 M trisodium citrate, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.874	α = 90
b = 48.81	β = 99.2
c = 41.32	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	130	CCD	ADSC QUANTUM 315		2009-11-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.98	APS	24-ID-E

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	1.35	50	97	0.049	29.1	3.5	46959	45550		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.35	50	97

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.35	29.079	1.01	46653	43191	2146	92.58	0.1302	0.1277	0.1771	0.1819

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]
-2.7097		0.325	-0.6712		1.418

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.386
f_angle_d	1.119
f_chiral_restr	0.066
f_bond_d	0.006
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1605
Nucleic Acid Atoms
Solvent Atoms	318
Heterogen Atoms	74

Software

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