3G39

Structure of a lamprey variable lymphocyte receptor

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2O6S	PDB ENTRY 2O6S

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	7.5	296	70% (w/v) 2-methyl-2,4-pentanediol and 0.1 M Hepes, pH 7.5, EVAPORATION, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
1.88	34.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.543	α = 90
b = 49.543	β = 90
c = 97.912	γ = 120

Symmetry
Space Group	P 65

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 315		2008-07-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.0	NSLS	X29A

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	1.55	30		0.058	55.8	22.2		19434			19.9

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)
	1.55	1.61			0.446	6.9	20	1908

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 2O6S	1.55	30	18422	998	98.53	0.16454	0.16263	0.19921	RANDOM	19.684

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]
0.39	0.19		0.39		-0.58

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.342
r_dihedral_angle_4_deg	23.848
r_dihedral_angle_3_deg	14.051
r_dihedral_angle_1_deg	6.05
r_scangle_it	4.465
r_scbond_it	3.03
r_mcangle_it	2.069
r_angle_refined_deg	1.79
r_mcbond_it	1.207
r_nbtor_refined	0.32
r_nbd_refined	0.221
r_symmetry_hbond_refined	0.209
r_symmetry_vdw_refined	0.208
r_xyhbond_nbd_refined	0.149
r_chiral_restr	0.122
r_bond_refined_d	0.018
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1296
Nucleic Acid Atoms
Solvent Atoms	120
Heterogen Atoms

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling