2GK2

Crystal structure of the N terminal domain of human CEACAM1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	294	16% (w/v) polyethylene glycol mono methyl ether 2000, 100 mM Tris, and 5 mM nickel chloride, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.73	54.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.2	α = 90
b = 86.2	β = 90
c = 62	γ = 120

Symmetry
Space Group	P 63

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	MARMOSAIC 300 mm CCD		2005-06-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.00	APS	22-ID

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	2.2	50	99.6	0.067	38.8	10.5	13366	13366			50

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	2.2	2.28	96.9		0.736	2	6.7	1290

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	PDB ENTRY 1L6Z	2.2	50	13361	13361	657	99.63	0.213	0.213	0.21	0.258	RANDOM	41.5

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]
0.05	0.03		0.05		-0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.651
r_dihedral_angle_4_deg	19.258
r_dihedral_angle_3_deg	16.623
r_dihedral_angle_1_deg	7.287
r_scangle_it	2.4
r_angle_refined_deg	1.537
r_scbond_it	1.493
r_mcangle_it	0.862
r_mcbond_it	0.474
r_nbtor_refined	0.324
r_nbd_refined	0.236
r_symmetry_vdw_refined	0.215
r_symmetry_hbond_refined	0.209
r_xyhbond_nbd_refined	0.181
r_chiral_restr	0.105
r_bond_refined_d	0.013
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1709
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
HKL-2000	data scaling
MOLREP	phasing