3L31

Crystal structure of the CBS and DRTGG domains of the regulatory region of Clostridium perfringens pyrophosphatase complexed with the inhibitor, AMP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	15% PEG 4000, 100mM Tris/HCl pH 8.5, 20mM MgCl2, 0.15mM AMP, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.96	α = 90
b = 79.61	β = 90
c = 116.36	γ = 90

Symmetry
Space Group	P 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	ADSC Quantum Q315r		2006-12-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.975501	ESRF	ID14-4

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	2.3	20	99	0.089	0.089	16.41	7.3	24771	24771		-3	52.712

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)
	2.3	2.45	98.7		0.289	0.289	5.3	5.4	4182

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	SAD	THROUGHOUT	2.3	20	23426	1305	99.03	0.21895	0.21575	0.27713	RANDOM	42.617

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]
3.55			-1.02		-2.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.003
r_dihedral_angle_4_deg	22.31
r_dihedral_angle_3_deg	16.697
r_dihedral_angle_1_deg	6.318
r_scangle_it	3.771
r_scbond_it	2.351
r_mcangle_it	1.68
r_angle_refined_deg	1.54
r_angle_other_deg	1.259
r_mcbond_it	0.895
r_mcbond_other	0.182
r_chiral_restr	0.083
r_bond_refined_d	0.018
r_gen_planes_refined	0.007
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3533
Nucleic Acid Atoms
Solvent Atoms	97
Heterogen Atoms	46

Software

Software
Software Name	Purpose
XSCALE	data scaling
SHELX	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data scaling
XDS	data reduction
SHELXD	phasing