Experiment: 3EPJ

Crystallographic snapshots of eukaryotic dimethylallyltransferase acting on tRNA: Insight into tRNA recognition and reaction mechanism

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	278	Pentaerythritol propoxylate 426, pH 6.5, vapor diffusion, temperature 278K, , VAPOR DIFFUSION

Crystal Properties
Matthews coefficient	Solvent content
3.85	68.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 162.92	α = 90
b = 211.033	β = 90
c = 126.228	γ = 90

Symmetry
Space Group	C 2 2 21

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	MARMOSAIC 225 mm CCD		2007-11-12	M	SINGLE WAVELENGTH
2	1		CCD	MARMOSAIC 300 mm CCD		2007-11-12

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.9785	APS	21-ID-F
2	SYNCHROTRON	APS BEAMLINE 21-ID-G	0.9785	APS	21-ID-G

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	3.1	50					36730

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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		3.1	50	2516	34214	2780	86	0.198	0.2114	0.24	0.2521	90.092

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]
-23.328			39.895		-16.567

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.673
c_mcangle_it	2.267
c_scbond_it	1.615
c_mcbond_it	1.282
c_angle_deg	1.211
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6678
Nucleic Acid Atoms	2944
Solvent Atoms	197
Heterogen Atoms	18

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction