4IFJ

Crystal Structures of apo Keap1, Keap1-peptide, and Keap1-compound complexes

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	277	0.1 M MMT Buffer pH 7.0, 25 % PEG1500 (MMT Buffer: Malic acid, MES and Tris)., VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.789	α = 90
b = 85.789	β = 90
c = 146.284	γ = 120

Symmetry
Space Group	P 65 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	180	IMAGE PLATE	RIGAKU RAXIS HTC		2012-07-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	42.9	99.56			28690	28563	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.847	95.92

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.8	42.89	1	28690	28563	1526	99.56	0.1925	0.19247	0.19032	0.23292	RANDOM	29.268

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]
0.03	0.01		0.03		-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.775
r_dihedral_angle_4_deg	21.32
r_dihedral_angle_3_deg	11.74
r_dihedral_angle_1_deg	7.261
r_scangle_it	4.561
r_scbond_it	3.135
r_angle_refined_deg	1.926
r_mcangle_it	1.826
r_mcbond_it	1.142
r_chiral_restr	0.179
r_bond_refined_d	0.024
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2217
Nucleic Acid Atoms
Solvent Atoms	275
Heterogen Atoms

Software

Software
Software Name	Purpose
CrystalClear	data collection
AMoRE	phasing
REFMAC	refinement
CrystalClear	data reduction
CrystalClear	data scaling