6HX1

IRE1 ALPHA IN COMPLEX WITH imidazo[1,2-b]pyridazin-8-amine compound 2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	0 % Isopropanol 10 % PEG4000 0.10 M Na-citrate pH=5.75 Protein at 9mg/mL was in 20 mM TRIS/Cl pH=8.0, 150 mM NaCl, 5 mM DTT, and 2mM compound was added to the protein before setting up trays.

Crystal Properties
Matthews coefficient	Solvent content
3	59.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 144.408	α = 90
b = 47.074	β = 112.14
c = 86.369	γ = 90

Symmetry
Space Group	C 1 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		2014-10-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	1	SLS	X06SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	2.13	80	94.5	0.081	0.998	15.83	3.7		28816

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	2.13	2.38	91.6		0.517		3.6

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	4Z7G	2.14	80	27136	1537	95.48	0.21942	0.21673	0.2676	RANDOM	38.771

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]
-3.04		-0.35	3.18		0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.865
r_dihedral_angle_4_deg	13.403
r_dihedral_angle_3_deg	13.271
r_long_range_B_other	7.316
r_long_range_B_refined	7.308
r_dihedral_angle_1_deg	6.085
r_scangle_other	5.587
r_mcangle_it	4.498
r_mcangle_other	4.497
r_scbond_it	3.57
r_scbond_other	3.565
r_mcbond_other	3.081
r_mcbond_it	3.08
r_angle_other_deg	2.594
r_angle_refined_deg	1.251
r_chiral_restr	0.07
r_bond_refined_d	0.007
r_gen_planes_refined	0.004
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3134
Nucleic Acid Atoms
Solvent Atoms	122
Heterogen Atoms	24

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
REFMAC	refinement
MOLREP	phasing