3I0A

Crystal structure of Siderocalin (NGAL, Lipocalin 2) K134A mutant complexed with Ferric Enterobactin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	291	1.3M Ammonium sulfate, 0.2M Lithium sulfate, 50mM sodium chloride, 0.1M sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.85	56.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.253	α = 90
b = 114.253	β = 90
c = 117.95	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	ADSC QUANTUM 210			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1		ALS	5.0.1

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	2.6	50	99.9	0.123	12.4	13.9		24594

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)
	2.6	2.7	99.9		0.39	4.9	14	2396

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	Used previously-determined structure	THROUGHOUT	1L6M	2.6	50	23297	1252	99.74	0.25725	0.25494	0.29955	Used same set as previously-determined structure	37.58

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]
0.11			0.11		-0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.829
r_dihedral_angle_4_deg	16.734
r_dihedral_angle_3_deg	13.362
r_dihedral_angle_1_deg	5.071
r_scangle_it	1.487
r_scbond_it	1.026
r_angle_refined_deg	0.984
r_mcangle_it	0.827
r_angle_other_deg	0.788
r_mcbond_it	0.515
r_mcbond_other	0.311
r_nbd_refined	0.191
r_nbd_other	0.186
r_nbtor_refined	0.179
r_metal_ion_refined	0.163
r_xyhbond_nbd_refined	0.125
r_symmetry_vdw_other	0.109
r_symmetry_vdw_refined	0.103
r_symmetry_hbond_refined	0.101
r_nbtor_other	0.08
r_chiral_restr	0.057
r_bond_refined_d	0.006
r_bond_other_d	0.006
r_gen_planes_refined	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3902
Nucleic Acid Atoms
Solvent Atoms	100
Heterogen Atoms	145

Software

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