1I1F

Crystal structure of human class i mhc (hla-a2.1) complexed with beta 2-microglobulin and hiv-rt variant peptide i1y

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		PROTEIN WAS CRYSTALLIZED IN THE HANGING DROP VAPOR DIFFUSION METHOD. THE RESERVOIR SOLUTION CONTAINED 16% PEG8000 IN 25MM MES BUFFER, PH6.5. THE HANGING DROP WAS A 1:1 MIXTURE OF THE RESERVOIR SOLUTION AND THE PROTEIN SOLUTION WHICH CONTAINED 10MG/ML PROTEIN IN 25MM MES BUFFER, PH6.5.

Crystal Properties
Matthews coefficient	Solvent content
2.5	46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.574	α = 82.09
b = 62.97	β = 76.47
c = 74.559	γ = 77.78

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	IMAGE PLATE	RIGAKU RAXIS IIC	MIRRORS	1997-12-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	2.8	30	99.2	0.11	13.2	7		21030			45.5

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)
	2.8	2.9	98.6		0.32	4.2	3

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	PDB ENTRY 1HHH	2.8	15	18619	2102	99	0.274	0.26	0.315	RANDOM	43.2

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
p_transverse_tor	26.2
p_staggered_tor	20.1
p_planar_tor	7.4
p_scangle_it	1.526
p_scbond_it	1.046
p_mcangle_it	1.006
p_mcbond_it	0.811
p_multtor_nbd	0.271
p_xyhbond_nbd	0.228
p_singtor_nbd	0.189
p_chiral_restr	0.105
p_planar_d	0.073
p_angle_d	0.045
p_plane_restr	0.0203
p_bond_d	0.01
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6311
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement
CCP4	phasing