Experiment: 5F1S

Crystal structure of the teleost fish polymeric Ig receptor (pIgR) ectodomain

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	289	75mM MES monohydrate pH 6.5, 9% w/v PEG 20,000, 25mM phenol

Crystal Properties
Matthews coefficient	Solvent content
2.9	57.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.938	α = 90
b = 54.938	β = 90
c = 187.257	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	PSI PILATUS 6M		2012-07-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL12-2	0.9537	SSRL	BL12-2

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	1.749	38.04	99.81	0.05409	18.17	7.7		30034

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	1.749	1.81	98.95		1.05	1.9	8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	1.749	38.037	1.34	30033	3006	99.8	0.1881	0.1851	0.1904	0.2148	0.2212

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	11.687
f_angle_d	1.216
f_chiral_restr	0.074
f_bond_d	0.014
f_plane_restr	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1614
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
SHELXDE	phasing