6FCH

Crystal Structure of Human APRT wild type in complex with PRPP and Mg2+

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	NaOAc, PEG4000, Glycerol, Tris

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.26	α = 77.02
b = 47.35	β = 69.53
c = 47.44	γ = 61.78

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 2M		2014-10-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE MASSIF-1	0.966	ESRF	MASSIF-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	1.45	44.33	90.8	0.039	0.039	0.998	9.7	1.6		54531

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.45	1.47	86.9		0.262	0.262	0.788	2.1	1.7	2647

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	5DCI	1.45	44.33	51787	2743	90.76	0.1423	0.1405	0.1755	RANDOM	17.406

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]
0.12	0.61	-0.38	0.01	-0.1	0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.925
r_dihedral_angle_4_deg	19.563
r_sphericity_free	14.407
r_dihedral_angle_3_deg	12.567
r_dihedral_angle_1_deg	6.011
r_rigid_bond_restr	6.001
r_sphericity_bonded	4.696
r_mcangle_it	1.584
r_mcbond_it	1.476
r_mcbond_other	1.476
r_angle_refined_deg	1.232
r_angle_other_deg	0.565
r_chiral_restr	0.062
r_bond_refined_d	0.007
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2736
Nucleic Acid Atoms
Solvent Atoms	296
Heterogen Atoms	46

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
Coot	model building
MxCuBE	data collection
XDS	data reduction