3GFB

L-Threonine Dehydrogenase (TkTDH) from the hyperthermophilic archaeon Thermococcus kodakaraensis

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	298	0.05 M sodium citrate, 2.4 M ammonium sulfate, 0.1 M sodium/potassium tartrate, 5%(v/v) glycerol and 0.1 mM zinc chloride, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.44	64.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.481	α = 90
b = 124.481	β = 90
c = 271.143	γ = 90

Symmetry
Space Group	P 43 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 4r	mirrors	2007-12-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-3	0.931	ESRF	ID14-3

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	2.4	73.92	100	0.146				84056			42.6

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)
	2.4	2.5	100		0.59	2.7		9511

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	PDB entry 2DFV	2.4	73.92	79730	4215	100	0.22039	0.21737	0.27659	RANDOM	38.704

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]
0.07			0.07		-0.14

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.661
r_dihedral_angle_3_deg	20.023
r_dihedral_angle_4_deg	18.49
r_dihedral_angle_1_deg	9.359
r_scangle_it	5.416
r_scbond_it	3.719
r_angle_refined_deg	2.772
r_mcangle_it	2.545
r_mcbond_it	1.559
r_nbtor_refined	0.325

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.661
r_dihedral_angle_3_deg	20.023
r_dihedral_angle_4_deg	18.49
r_dihedral_angle_1_deg	9.359
r_scangle_it	5.416
r_scbond_it	3.719
r_angle_refined_deg	2.772
r_mcangle_it	2.545
r_mcbond_it	1.559
r_nbtor_refined	0.325
r_nbd_refined	0.251
r_symmetry_vdw_refined	0.25
r_symmetry_hbond_refined	0.242
r_xyhbond_nbd_refined	0.217
r_chiral_restr	0.19
r_bond_refined_d	0.034
r_gen_planes_refined	0.012

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10672
Nucleic Acid Atoms
Solvent Atoms	491
Heterogen Atoms	226

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.