1HFW

X-ray structure of the complex between Erwinia chrysanthemi L-asparaginase and L-Glutamate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.4		40%(W/V) AMMONIUM SULFATE, 2%(V/V) PEG400, 0.1M TRIS (PH 8.5), CROSSLINKING WITH 0.1% GLUTARALDEHYDE. TRANSFER TO AMMONIUM SULFATE-FREE, 30% PEG4000, CHANGE OF THE BUFFER TO 0.1M SODIUM ACETATE

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.47	α = 90
b = 91.7	β = 91.94
c = 130.62	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	295	IMAGE PLATE	MAR scanner 345 mm plate	COLLIMATOR	1998-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	1.8	40	86	0.076	7.4	2.8		102023		-3

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	1.8	1.86	65.4		0.337	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	PREVIUOSLY PUBLISHED STRUCTURE OF ERWINIA CHRYSANTHEMI L-ASPARAGINSE (MILLER ET AL., FEBS LETT., 1993	1.8	10	2	89630	1773	76.2	0.168	0.168	0.188	RANDOM	19.4

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]
-2.445		-0.122	-0.613		3.059

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.59
c_scangle_it	2.5
c_mcangle_it	2
c_scbond_it	2
c_mcbond_it	1.5
c_angle_deg	1.303
c_improper_angle_d	0.755
c_bond_d	0.0059
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_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9353
Nucleic Acid Atoms
Solvent Atoms	961
Heterogen Atoms	40

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling