2PG3

Crystal structure of a Queuosine biosynthesis protein queC (ECA1155) from Erwinia carotovora subsp. atroseptica SCRI1043 at 2.40 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.1	277	NANODROP, 0.2M Li3Citrate, 20.0% PEG 3350, No Buffer pH 8.1, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.32	46.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.154	α = 90
b = 78.154	β = 90
c = 77.755	γ = 90

Symmetry
Space Group	P 41 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	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2007-03-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97917	SSRL	BL11-1

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	2.4	27.566	99.9	0.086	0.086	6.4	13.5		9920

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)
1	2.4	2.46	100		0.649	0.649	1.2	12	710

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.4	27.566	9883	475	99.88	0.188	0.188	0.186	0.223	RANDOM	48.553

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]
-1.35			-1.35		2.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.132
r_dihedral_angle_4_deg	18.732
r_dihedral_angle_3_deg	14.549
r_scangle_it	7.573
r_dihedral_angle_1_deg	7.207
r_scbond_it	5.647
r_mcangle_it	3.373
r_mcbond_it	2.271
r_angle_refined_deg	1.592
r_angle_other_deg	0.876
r_mcbond_other	0.531
r_nbd_refined	0.212
r_nbtor_refined	0.184
r_symmetry_vdw_refined	0.18
r_nbd_other	0.179
r_symmetry_vdw_other	0.175
r_xyhbond_nbd_refined	0.153
r_chiral_restr	0.09
r_nbtor_other	0.089
r_symmetry_hbond_refined	0.056
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1666
Nucleic Acid Atoms
Solvent Atoms	33
Heterogen Atoms	1

Software

Software
Software Name	Purpose
MolProbity	model building
SOLVE	phasing
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction
CCP4	data scaling