6PAA

E. coli L-asparaginase II mutant (T12V) in complex with L-Asp at pH 5.5

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	298	Crystals were grown 0.17 M NH4-citrate, pH 5.5, 17-18% PEG3350, 5 mM L-Asp

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 151.837	α = 90
b = 62.472	β = 118.11
c = 143.373	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	100	PIXEL	DECTRIS EIGER R 4M	Multilayer X-ray mirrors VariMax HF	2018-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	40	91	0.053	0.064	0.035	14.9	3		92363

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.85	1.88	55.1		0.394	0.529	0.35	0.726		1.9

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.85	40	86417	4403	89.51	0.1727	0.1699	0.2286	RANDOM	26.299

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]
-0.04		0.01	-0.49		0.33

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.536
r_dihedral_angle_4_deg	18.77
r_dihedral_angle_3_deg	14.276
r_dihedral_angle_1_deg	6.769
r_angle_refined_deg	1.893
r_angle_other_deg	1.092
r_chiral_restr	0.119
r_bond_refined_d	0.02
r_gen_planes_refined	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9323
Nucleic Acid Atoms
Solvent Atoms	1075
Heterogen Atoms	36

Software

Software
Software Name	Purpose
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction