3TBS

CRYSTAL STRUCTURE OF THE MURINE CLASS I MAJOR HISTOCOMPATIBILITY COMPLEX H-2DB IN COMPLEX THE WITH LCMV-DERIVED GP33 ALTERED PEPTIDE ligand (V3P,Y4A)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1S7U

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	Crystals were obtained in 1.6-1.8 M ammonium sulfate, 0.1 M Tris HCl pH 7.0-9.0 screening conditions. 4 ul of a 5mg/ml protein solution were mixed in a 4:2 ratio with the crystallization reservoir, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.32	62.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 117.84	α = 90
b = 125.12	β = 128.15
c = 101.32	γ = 90

Symmetry
Space Group	C 1 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	100	CCD	ADSC QUANTUM 315r		2008-03-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.934	ESRF	ID14-2

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	2.49	49.21	99.9	0.152	10	3.9	40587	40587			55

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	2.5	2.61	99.9		0.83	2.1	3.9	5927

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1S7U	2.49	49.21	38455	38455	2006	99.62	0.23164	0.23164	0.22961	0.27044	RANDOM	52.417

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]
0.47		0.37	-0.1		0.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.408
r_dihedral_angle_4_deg	21.445
r_dihedral_angle_3_deg	19.157
r_dihedral_angle_1_deg	6.406
r_scangle_it	1.622
r_angle_refined_deg	1.341
r_scbond_it	1.036
r_angle_other_deg	0.958
r_mcangle_it	0.601
r_mcbond_it	0.318
r_mcbond_other	0.093
r_chiral_restr	0.076
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.003
r_gen_planes_other	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6220
Nucleic Acid Atoms
Solvent Atoms	147
Heterogen Atoms	22

Software

Software
Software Name	Purpose
MxCuBE	data collection
MOLREP	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling