1NKR | pdb_00001nkr

INHIBITORY RECEPTOR (P58-CL42) FOR HUMAN NATURAL KILLER CELLS

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.7		PROTEIN WAS CRYSTALLIZED FROM 0.55 M (NH4)2HPO4, 50 MM SODIUM CITRATE, PH 5.4, FINAL PH 7.7. CRYSTALS WERE HARVESTED IN 1.5 M (NH4)2HPO4, 50 MM SODIUM CITRATE, PH 5.4, FINAL PH 7.7; THEN SOAKED IN 1.5 M (NH4)2HPO4, 50 MM SODIUM CITRATE, PH 5.4, 25% GLYCEROL, FINAL PH 7.7, AND FLASH-COOLED WITH LIQUID NITROGEN.

Crystal Properties
Matthews coefficient	Solvent content
1.8	40

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 92.36	α = 90
b = 92.36	β = 90
c = 46.77	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	90	CCD	PRINCETON 2K	MIRRORS	1996-10-10	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1		CHESS	F1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.7	16	99.5	0.073	0.073	17.1	7		25065

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.7	1.76	97.8		0.234	0.234	4	6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.7	6	24473	2427	99.5	0.205	0.227	0.255	RANDOM

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1513
Nucleic Acid Atoms
Solvent Atoms	211
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing
REFMAC	refinement