3SAO

The Siderocalin Ex-FABP functions through dual ligand specificities

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1YUP	1YUP and 1EW3 were superimposed and used as single search model ensemble.
experimental model	PDB	1EW3	1YUP and 1EW3 were superimposed and used as single search model ensemble.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	22% PEG 4000, 0.1M Tris, 0.2M sodium acetate, 10% isopropanol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.95	α = 90
b = 68.89	β = 90
c = 117.4	γ = 90

Symmetry
Space Group	P 21 21 21

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 315r		2010-03-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1	1.0	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	1.8	44.68	94.2	0.058	11	4.87		27696

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	1.8	1.86	94.4		0.417	3.3	4.86	2730

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	MOLECULAR REPLACEMENT	THROUGHOUT	1YUP and 1EW3 were superimposed and used as single search model ensemble.	1.8	44.68	27646	1361	94.18	0.2037	0.2022	0.2333	RANDOM	51.0918

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]
-0.05			-0.02		0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.84
r_dihedral_angle_3_deg	13.916
r_dihedral_angle_4_deg	12.055
r_dihedral_angle_1_deg	7.104
r_scangle_it	6.044
r_scbond_it	4.342
r_mcangle_it	2.976
r_mcbond_it	1.866
r_angle_refined_deg	1.448
r_angle_other_deg	0.747
r_mcbond_other	0.611
r_chiral_restr	0.068
r_bond_refined_d	0.014
r_gen_planes_refined	0.01
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2298
Nucleic Acid Atoms
Solvent Atoms	134
Heterogen Atoms	50

Software

Software
Software Name	Purpose
d*TREK	data reduction
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
d*TREK	data scaling
PHASER	phasing