2JFN | pdb_00002jfn

Crystal structure of Escherichia coli glutamate racemase in complex with L- Glutamate and activator UDP-MurNAc-ala

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				PROTEIN FORMULATED AT 10 MG/ML WITH 200MM AMMONIUM ACETATE PH 7.4, 5MM D-L GLUTAMATE, 1 MM TCEP AND IN 0.6 MM OF THE ACTIVATOR MUR-NAC-ALA AND CRYSTALLISED WITH 100 MM SODIUM ACETATE PH 4.55-10% MME 2000 AND 30% GLYCEROL

Crystal Properties
Matthews coefficient	Solvent content
2.66	53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.05	α = 90
b = 112.82	β = 90
c = 74.12	γ = 90

Symmetry
Space Group	C 2 2 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 CCD		2000-04-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	20	95.6	0.07	5.6	6.4		338825		2.1

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	1.9	2	78.5		0.36	2.1	3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.9	20	26542	1344		0.2185	0.22	0.244	RANDOM

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]
3.991			-8.126		4.136

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.31354
c_bond_d	0.006037
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2047
Nucleic Acid Atoms
Solvent Atoms	221
Heterogen Atoms	59

Software

Software
Software Name	Purpose
CNX	refinement
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing