Experiment: 2QY2

Characterization of a trifunctional mimivirus mRNA capping enzyme and crystal structure of the RNA triphosphatase domainm.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		300	20-30% PEG 4000 (less than 1 mo. old), 0.1M Sodium Citrate, 0.2M Ammonium Acetate, pH 5.0-6.0, VAPOR DIFFUSION, HANGING DROP, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 154.462	α = 90
b = 154.462	β = 90
c = 39.618	γ = 120

Symmetry
Space Group	P 64

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	54-pole harmonic emission undulator with a vertically focusing mirror and a horizontally focusing monochromator (Si111).	2006-09-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.9793, 1.1	NSLS	X29A

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	2	40	99.1	0.048	31.4	4.61	36953	36620		-1	26.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2	2.07	95.18		0.4	1.95	2.65	3678

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	SAD	THROUGHOUT	2	34.09	1	34612	3429	93.4	0.212	0.212	0.2099	0.252	0.2518	RANDOM	46.5

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]
2.37	2.35		2.56		-4.92

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.7
c_scangle_it	6.28
c_scbond_it	4.41
c_mcangle_it	4.09
c_mcbond_it	2.87
c_improper_angle_d	1.62
c_angle_deg	1.6
c_bond_d	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3862
Nucleic Acid Atoms
Solvent Atoms	345
Heterogen Atoms	21

Software

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