7LFK

MODEL OF MHC CLASS Ib H2-M3 WITH MOUSE ND1 N-TERMINAL HEPTAPEPTIDE, THR MUTANT, REFINED AT 1.60 ANGSTROMS RESOLUTION

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	283	0.1 M Hepes, 20% (w/v) PEG 4000, 30% (v/v) ethylene glycol

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.43	α = 102.537
b = 69.1	β = 93.86
c = 54.8	γ = 114.1

Symmetry
Space Group	P 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 1	monochromator	1999-01-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.908	CHESS	A1

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	1.6	31.7	86.7	0.107	7.6	3.5		93324			19.13

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	1.6	1.64	68		0.314	2.6

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	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	FREE R-VALUE	1MHC	1.6	31.62	1.98	93319	2001	86.6	0.209	0.2082	0.2445	30.67

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
f_dihedral_angle_d	18.5383
f_angle_d	1.4353
f_chiral_restr	0.0866
f_bond_d	0.0181
f_plane_restr	0.0115

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6236
Nucleic Acid Atoms
Solvent Atoms	461
Heterogen Atoms	20

Software

Software
Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.