Experiment: 5K6X

Sidekick-2 immunoglobulin domains 1-4, crystal form 1

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		Sdk1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	BATCH MODE	4	295	1.5M ammonium sulfate, 0.1M sodium citrate pH4

Crystal Properties
Matthews coefficient	Solvent content
3.26	62.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.11	α = 90
b = 130.01	β = 100.67
c = 78.39	γ = 90

Symmetry
Space Group	P 1 21 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	CCD	MAR CCD 165 mm		2013-09-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4C	0.979	NSLS	X4C

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	2.7	40	98.7	0.099	12.2	5.1		29407

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	2.7	2.85	98.5		0.487	2.8	5.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	Sdk1	2.7	39.002	1.34	29407	1486	98.63	0.1946	0.1926	0.2299	0.2231

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	12.372
f_angle_d	0.705
f_chiral_restr	0.026
f_bond_d	0.003
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5649
Nucleic Acid Atoms
Solvent Atoms	38
Heterogen Atoms	156

Software

Software
Software Name	Purpose
PHENIX	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing