1AXR | pdb_00001axr

COOPERATIVITY BETWEEN HYDROGEN-BONDING AND CHARGE-DIPOLE INTERACTIONS IN THE INHIBITION OF BETA-GLYCOSIDASES BY AZOLOPYRIDINES: EVIDENCE FROM A STUDY WITH GLYCOGEN PHOSPHORYLASE B

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	soak native crystals	6.7		NATIVE T-STATE GLYCOGEN PHOSPHORYLASE CRYSTALS WERE SOAKED WITH 10 MM BES, 0.1 MM EDTA AND 0.02% SODIUM AZIDE SOLUTION CONTAINING 5 MM TRIAZOLE AND 50 MM SODIUM DIHYDROGEN PHOSPHATE FOR 1 HOUR., pH 6.7, soak native crystals

Crystal Properties
Matthews coefficient	Solvent content
2.38	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.72	α = 90
b = 126.72	β = 90
c = 115.59	γ = 90

Symmetry
Space Group	P 43 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	IMAGE PLATE	MAR scanner 180 mm plate		1997-03-10	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R		ELETTRA	5.2R

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	2.3	15	89.8	0.097	9.4	7.1		37906

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	2.34	76.1		0.258	2.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		FREE R	2.3	8	2	35849		84.9	0.203	0.203	0.276	25

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_dihedral_angle_d	23
x_mcangle_it	2
x_scangle_it	2
x_improper_angle_d	1.5
x_mcbond_it	1.5
x_scbond_it	1.5
x_angle_deg	1.44
x_bond_d	0.008
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6742
Nucleic Acid Atoms
Solvent Atoms	500
Heterogen Atoms	39

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing