1AQZ

CRYSTAL STRUCTURE OF A HIGHLY SPECIFIC ASPERGILLUS RIBOTOXIN, RESTRICTOCIN

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	vapor diffusion and microdialysis	6.8		A COMBINATION OF VAPOR DIFFUSION AND MICRODIALYSIS TECHNIQUES WERE USED TO CRYSTALLIZE RESTRICTOCIN. THE FINAL MOTHER LIQUOR CONSISTS OF 60% ETHANOL, 10MM SODIUM PHOSPHATE, PH6.8. THE PROTEIN CONCENTRATION IS 10MG/ML., vapor diffusion and microdialysis

Crystal Properties
Matthews coefficient	Solvent content
2.29	46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.24	α = 90
b = 82.16	β = 100.5
c = 38.04	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	IMAGE PLATE	FUJI	MIRROR	1994-08-16	L

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X26C	0.7, 2.05	NSLS	X26C

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	1.7	8	85.6	0.039		8		28328		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.7	1.78	54.8

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SINGLE ISOMORPHOUS REPLACEMENT AND ANOMALOUS SCATTERING	THROUGHOUT	1.7	8	2	28328	2232	85.6	0.237	0.237	0.177	RANDOM	19.9

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	27.1
x_angle_deg	2.02
x_improper_angle_d	1.8
x_bond_d	0.018
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
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2272
Nucleic Acid Atoms
Solvent Atoms	205
Heterogen Atoms	15

Software

Software
Software Name	Purpose
LaueView	data collection
LaueView	data reduction
PHASES	phasing
X-PLOR	model building
X-PLOR	refinement
LaueView	data scaling
X-PLOR	phasing