4IAX

Engineered human lipocalin 2 (CL31) in complex with Y-DTPA

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.65	293	17%(w/v) PEG3350, 0.4M potassium phosphate, pH 4.65, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.32	46.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.12	α = 90
b = 60.12	β = 90
c = 110.55	γ = 90

Symmetry
Space Group	P 41 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	CCD	MARMOSAIC 225 mm CCD	mirrors	2009-05-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.2	0.91841	BESSY	14.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.9	52.82	99.9	0.068	18.4	7.5	16702	16692		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	2	100		0.245	0.245	0.263	0.096	2.8	7.5	2388

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (All)	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	3DSZ	1.9	52.82	2	16702	16635	843	99.79	0.1972	0.1947	0.2446	RANDOM	22.3231

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]
0.3			0.3		-0.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.445
r_dihedral_angle_4_deg	24.024
r_dihedral_angle_3_deg	14.655
r_dihedral_angle_1_deg	6.244
r_scangle_it	5.66
r_scbond_it	3.567
r_mcangle_it	2.112
r_angle_refined_deg	1.909
r_mcbond_it	1.216
r_chiral_restr	0.158
r_bond_refined_d	0.023
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1395
Nucleic Acid Atoms
Solvent Atoms	116
Heterogen Atoms	43

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection