4QGP

Crystal structure of a pyrophosphatase (AF1178) from Archaeoglobus fulgidus DSM 4304 at 1.80 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	293	63.0% polyethylene glycol 200, 0.2M magnesium chloride, 0.1M sodium cacodylate pH 6.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.168	α = 90
b = 102.136	β = 90
c = 103.285	γ = 90

Symmetry
Space Group	I 21 21 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 325 mm CCD	double crystal monochromator	2009-11-06	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91837,0.97954	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.8	28.202	97.7	0.056	10.16			24327		-3	22.035

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.86	95.8		0.605	1.5

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.78	28.202	24325	1230	96.09	0.1956	0.1935	0.238	RANDOM	25.5229

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]
-20.86			4.07		16.79

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.027
r_dihedral_angle_4_deg	15.081
r_dihedral_angle_3_deg	14.058
r_dihedral_angle_1_deg	4.823
r_scbond_it	3.074
r_mcangle_it	2.48
r_mcbond_it	1.875
r_angle_refined_deg	1.406
r_chiral_restr	0.1
r_bond_refined_d	0.011

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.027
r_dihedral_angle_4_deg	15.081
r_dihedral_angle_3_deg	14.058
r_dihedral_angle_1_deg	4.823
r_scbond_it	3.074
r_mcangle_it	2.48
r_mcbond_it	1.875
r_angle_refined_deg	1.406
r_chiral_restr	0.1
r_bond_refined_d	0.011
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1785
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms	28

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
XSCALE	data scaling
REFMAC	refinement
XDS	data reduction
SHELXD	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.