4E2F

Crystal Structure of E. coli Aspartate Transcarbamoylase K164E/E239K Mutant in an intermediate state

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.75	293	16% (w/v) PEG 4000, 0.04 M Na2MoO4, 0.04 M N-cyclohexyl-3-aminopropanesulfonic acid, 30 mM Tris-acetate, pH 8.75, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.96	58.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.086	α = 90
b = 144.814	β = 90
c = 203.359	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	IMAGE PLATE	RIGAKU RAXIS IV++	Rigaku Osmic VariMax	2008-06-19	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)	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	2.8	29.89	92.4	0.081	8.7	3.33	90709	83815			84.25

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	2.8	2.9	92.4		0.473	2.2	3.35	8981

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	2.8	29.888	1.34	83904	83783	4207	92.4	0.2171	0.214	0.2742	5% 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]
0.7772			2.9976		-3.7748

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.102
f_angle_d	1.511
f_chiral_restr	0.098
f_bond_d	0.014
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	21252
Nucleic Acid Atoms
Solvent Atoms	506
Heterogen Atoms	6

Software

Software
Software Name	Purpose
CrystalClear	data collection
MOLREP	phasing
PHENIX	refinement
d*TREK	data reduction
d*TREK	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.