4IOT

High-resolution Structure of Triosephosphate isomerase from E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	294	0.1 M Bis-Tris and 20% PEG5000 MME, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.47	α = 90
b = 67.452	β = 90
c = 150.354	γ = 90

Symmetry
Space Group	P 21 21 21

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 210		2012-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.97670	CHESS	A1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.85	75.16	99.4	0.085	20.56	5.2	38988	38754	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.85	1.88	93.06		0.404	2.29	3.1	2612

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1TRE	1.85	75.16	1	1	38988	38754	2049	99.4	0.173	0.1737	0.172	0.20633	RANDOM	21.267

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]
-0.45			1.01		-0.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.879
r_dihedral_angle_4_deg	18.431
r_dihedral_angle_3_deg	12.912
r_dihedral_angle_1_deg	4.698
r_scangle_it	2.056
r_scbond_it	1.273
r_angle_refined_deg	1.037
r_mcangle_it	0.656
r_mcbond_it	0.426
r_nbtor_refined	0.297
r_nbd_refined	0.182
r_symmetry_vdw_refined	0.161
r_symmetry_hbond_refined	0.131
r_xyhbond_nbd_refined	0.12
r_chiral_restr	0.067
r_bond_refined_d	0.008
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3774
Nucleic Acid Atoms
Solvent Atoms	474
Heterogen Atoms	5

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling