4QAE

Crystal structure of an engineered lipocalin (Anticalin) in complex with human hepcidin

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROPS	6.6	293	0.1 M HEPES/NaOH, 47% w/v MPD, pH 6.6, VAPOR DIFFUSION, HANGING DROPS, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.894	α = 90
b = 126.894	β = 90
c = 156.707	γ = 120

Symmetry
Space Group	P 31 2 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	PIXEL	DECTRIS PILATUS 6M	mirrors	2010-05-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	2.0	BESSY	14.1

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	2.1	35	99.8	0.083	19.1	10.33	162481	162157		-3	37.056

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	2.1	2.16	98.8		0.668	2.83

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	2.1	33.18	80956	4267	99.76	0.1681	0.1661	0.1753	0.2065	0.213	RANDOM	39.088

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]
-0.1	-0.05		-0.1		0.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.823
r_dihedral_angle_3_deg	14.761
r_dihedral_angle_4_deg	13.99
r_dihedral_angle_1_deg	6.724
r_mcangle_it	1.806
r_angle_refined_deg	1.595
r_mcbond_it	1.074
r_mcbond_other	1.07
r_angle_other_deg	0.812
r_chiral_restr	0.094

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9240
Nucleic Acid Atoms
Solvent Atoms	629
Heterogen Atoms	69

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
XDS	data reduction
Auto-Rickshaw	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.