5MDI

Crystal structure of TDP-43 N-terminal domain at 2.1 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277.15	0.1 M sodium cacodylate pH 6.5, 1.4 M sodium acetate

Crystal Properties
Matthews coefficient	Solvent content
2.62	53.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.518	α = 90
b = 89.518	β = 90
c = 49.153	γ = 120

Symmetry
Space Group	P 63

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 2M-F		2016-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	0.99987	SLS	X06DA

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	1.95	50	99.9	0.158	13.13	10.5		32038

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	2	100		4.95	0.206	0.57	10.9

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.1	44.76	12500	658	98.98	0.16646	0.16431	0.20583	RANDOM	47.864

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]
-0.38	-0.19		-0.38		1.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.226
r_dihedral_angle_3_deg	15.359
r_dihedral_angle_4_deg	14.387
r_long_range_B_refined	7.952
r_long_range_B_other	7.893
r_dihedral_angle_1_deg	7.259
r_scangle_other	4.647
r_mcangle_it	3.773
r_mcangle_other	3.772
r_scbond_other	3.296
r_scbond_it	3.294
r_angle_refined_deg	2.722
r_mcbond_it	2.611
r_mcbond_other	2.579
r_angle_other_deg	1.246
r_chiral_restr	0.175
r_bond_refined_d	0.031
r_gen_planes_refined	0.014
r_bond_other_d	0.003
r_gen_planes_other	0.002
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	1232
Nucleic Acid Atoms
Solvent Atoms	108
Heterogen Atoms	4

Software

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