1DKR

CRYSTAL STRUCTURES OF BACILLUS SUBTILIS PHOSPHORIBOSYLPYROPHOSPHATE SYNTHETASE: MOLECULAR BASIS OF ALLOSTERIC INHIBITION AND ACTIVATION.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	AMMONIUM SULFATE; TRISHCL; PEG 400; SODIUM PHOSPHATE; BETA-OCTYLGLUCOSIDE; ALPHA, BETA-METHYLENE ATP; RIBOSE-5-PHOSPHATE; MAGNESIUM SULFATE; ADP, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.98	58.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.61	α = 90
b = 115.61	β = 90
c = 107.75	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	274	IMAGE PLATE	RIGAKU RAXIS II		1994-05-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	2.2	100	98.8	0.077	9	3.4	40947	40947			22.1

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	2.3	2.42	99.6		0.2		3.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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		2.3	30	35645	35645	3610		0.18	0.18	0.24	RANDOMLY WITHIN RESOLUTION SHELL

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_angle_d	1.799
x_bond_d	0.014
x_bond_d_na
x_bond_d_prot
x_angle_d_na
x_angle_d_prot
x_angle_deg
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4658
Nucleic Acid Atoms
Solvent Atoms	230
Heterogen Atoms	20

Software

Software
Software Name	Purpose
MLPHARE	phasing
DM	model building
X-PLOR	refinement
DENZO	data reduction
CCP4	data scaling
ROTAVATA	data scaling
TRUNCATE	data scaling
DM	phasing