1IEB

HISTOCOMPATIBILITY ANTIGEN

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.2		18% PEG 4000, 2% EG, 200MM A.S, 100MM CITRATE PH 5.2

Crystal Properties
Matthews coefficient	Solvent content
2.85	60

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.53	α = 90
b = 77.53	β = 90
c = 319.48	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	FUJI

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A		NSLS	X4A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.7	20	92.1	0.087		2.95		29069

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1IEA	2.7	6	2	23940	1221	83.6	0.222	0.222	0.321	RANDOM	36.5

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	26.3
x_mcangle_it	3.17
x_scangle_it	2.68
x_mcbond_it	1.85
x_angle_deg	1.73
x_scbond_it	1.66
x_improper_angle_d	1.49
x_bond_d	0.011
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	6424
Nucleic Acid Atoms
Solvent Atoms	159
Heterogen Atoms	89

Software

Software
Software Name	Purpose
HKL	data collection
DENZO	data reduction
SCALA	data scaling
Agrovata	data reduction
X-PLOR	model building
X-PLOR	refinement
HKL	data reduction
CCP4	data scaling
X-PLOR	phasing