Experiment: 3CTL

Crystal structure of D-Allulose 6-Phosphate 3-Epimerase from Escherichia coli K12 complexed with D-glucitol 6-phosphate and magnesium

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3CT7	PDB entry 3CT7

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7	293	20% PEG 3350, 0.1 M Succinic acid, pH 7.0, VAPOR DIFFUSION, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
2.41	49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.706	α = 90
b = 129.04	β = 90
c = 154.874	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 4		2007-09-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.97915	NSLS	X4A

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	2.2	25	96.5	0.067		5.3	74982	74982			23.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3CT7	2.2	24.96	74982	74982	3777	96.5	0.243	0.243	0.2434	0.265	0.2648	RANDOM	39.6

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]
7.5			-6.69		-0.8

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.9
c_scangle_it	2.69
c_mcangle_it	1.88
c_scbond_it	1.82
c_angle_deg	1.4
c_mcbond_it	1.14
c_improper_angle_d	0.82
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10464
Nucleic Acid Atoms
Solvent Atoms	174
Heterogen Atoms	102

Software

Software
Software Name	Purpose
CNS	refinement
ADSC	data collection
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing