1QMT

Recombinant Human Eosinophil Cationic Protein

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		EOSINOPHIL DERIVED NEUROTOXIN STRUCTURE AT 1.8 ANGSTROMS (COORDINATES NOT SUBMITTED) WAS PROVIDED BY S.MOSIMANN AND M.N.G.JAMES AND USED FOR MOLECULAR REPLACEMENT.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		pH 8.00

Crystal Properties
Matthews coefficient	Solvent content
3.3	53.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 100.159	α = 90
b = 100.159	β = 90
c = 31.281	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	293	IMAGE PLATE	MARRESEARCH		1999-03-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.5		SRS	PX9.5

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	2.4	40	95.7	0.107	10.7	4.93		6916			41.2

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	2.4	2.49	65		0.287	3.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	EOSINOPHIL DERIVED NEUROTOXIN STRUCTURE AT 1.8 ANGSTROMS (COORDINATES NOT SUBMITTED) WAS PROVIDED BY S.MOSIMANN AND M.N.G.JAMES AND USED FOR MOLECULAR REPLACEMENT.	2.4	20	6907	552	95.4	0.176	0.176	0.229	RANDOM	38.8

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	28.1
x_scangle_it	6.38
x_scbond_it	4.15
x_mcangle_it	3.75
x_mcbond_it	2.28
x_angle_deg	1.5
x_improper_angle_d	0.78
x_bond_d	0.01
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	1102
Nucleic Acid Atoms
Solvent Atoms	27
Heterogen Atoms

Software

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