5Y8I

Mycobacterium tuberculosis 3-Hydroxyisobutyrate dehydrogenase (MtHIBADH) + (S)-3-hydroxyisobutyrate (S-HIBA)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3OBB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	7.5	295	0.02M MgCl2.6H2O, 0.1M HEPES pH 7.5, 22% w/v polyacrylic acid sodium salt 5100

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 128.58	α = 90
b = 128.58	β = 90
c = 70.23	γ = 120

Symmetry
Space Group	P 65

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV++		2015-09-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	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	2.04	111.35	98.2	8.1	7.9		41507

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	2.04	2.15	98.2		0.177	8.1

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	3OBB	2.04	111.35	39336	2098	98.1	0.168	0.166	0.207	RANDOM	24.57

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	-0.03		-0.05		0.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.379
r_dihedral_angle_4_deg	15.435
r_dihedral_angle_3_deg	13.403
r_long_range_B_refined	6.323
r_long_range_B_other	6.323
r_dihedral_angle_1_deg	5.794
r_scangle_other	2.87
r_scbond_it	1.772
r_scbond_other	1.771
r_mcangle_other	1.753
r_mcangle_it	1.75
r_angle_refined_deg	1.346
r_mcbond_it	1.071
r_mcbond_other	1.066
r_angle_other_deg	0.971
r_chiral_restr	0.08
r_bond_refined_d	0.008
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	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	4105
Nucleic Acid Atoms
Solvent Atoms	611
Heterogen Atoms	51

Software

Software
Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing