3HT5

Crystal Structure of IlvE a Branched Chain Amino Acid Transaminase from Mycobacterium tuberculosis

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2HHF

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.8	298	0.05 M HEPES HCL pH 7.0, 1% Trytpone, 12% PEG 3350, under oil, sitting drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.454	α = 90
b = 85.351	β = 90
c = 59.715	γ = 90

Symmetry
Space Group	P 21 21 2

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 QUANTUM 4	DOUBLY FOCUSING TOROIDAL MIRROR	2008-11-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12B		NSLS	X12B

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	1.9	39.2	99.6	0.072	7.7	4.9		26897			22.9

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)
	1.9	2	100		0.386	1.9	4.9

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	2HHF	1.9	39.19	26897	1351	99.3	0.185	0.184	0.198	RANDOM	23.48

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.995
r_dihedral_angle_3_deg	13.657
r_dihedral_angle_4_deg	13.623
r_dihedral_angle_1_deg	5.775
r_scangle_it	2.442
r_scbond_it	1.467
r_angle_refined_deg	1.367
r_mcangle_it	0.979
r_mcbond_it	0.517
r_nbtor_refined	0.305
r_nbd_refined	0.193
r_symmetry_vdw_refined	0.151
r_symmetry_hbond_refined	0.147
r_chiral_restr	0.129
r_xyhbond_nbd_refined	0.12
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2567
Nucleic Acid Atoms
Solvent Atoms	281
Heterogen Atoms	16

Software

Software
Software Name	Purpose
MOSFLM	data reduction
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
PHENIX	phasing