4CBT

Design, synthesis, and biological evaluation of potent and selective Class IIa HDAC inhibitors as a potential therapy for Huntington's disease

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		0.1 M BISTRIS PH 6.5, 22% PEG MME 5000

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 104.41	α = 90
b = 104.41	β = 90
c = 88.44	γ = 120

Symmetry
Space Group	P 32

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 CCD			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04		Diamond	I04

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	3.03	90.42	99.8	0.16	8.5	5.3		20882		2

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	3.03	3.11	99.8		0.68	2.5	5.4

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	MOLECULAR REPLACEMENT	THROUGHOUT	3.03	90.42	19793	1070	100	0.21452	0.21139	0.27335	RANDOM	32.7

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]
1.95	0.98		1.95		-2.93

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.75
r_dihedral_angle_3_deg	13.742
r_dihedral_angle_4_deg	12.392
r_dihedral_angle_1_deg	5.076
r_angle_other_deg	4.475
r_angle_refined_deg	1.183
r_scangle_it	0.489
r_mcangle_it	0.355
r_scbond_it	0.311
r_chiral_restr	0.26
r_mcbond_it	0.192
r_gen_planes_other	0.031
r_bond_refined_d	0.012
r_gen_planes_refined	0.007
r_bond_other_d
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_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7899
Nucleic Acid Atoms
Solvent Atoms	10
Heterogen Atoms	84

Software

Software
Software Name	Purpose
REFMAC	refinement
PHASER	phasing