Experiment: 4FYY

E. coli Aspartate Transcarbamoylase Complexed with CTP, UTP, and Mg2+

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ZA1	PDB ENTRY 1ZA1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICRODIALYSIS	5.7	298	40 mM sodium citrate, 1 mM 2-mercaptoethanol, 0.2 mM EDTA, 1.0 mM CTP, pH 5.7 (crystals soaked in 5 mM UTP and 5 mM Mg2+), MICRODIALYSIS, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.91	57.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.133	α = 90
b = 121.133	β = 90
c = 141.438	γ = 120

Symmetry
Space Group	P 3 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	CCD	ADSC QUANTUM 315		2012-01-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.075	NSLS	X29A

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	1.9395	50	100	0.137	11.5	22	89121	89121		-3

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	1.9395	2.01	100		0.608		19.5	8794

Refinement

Statistics
Diffraction ID	Structure Solution 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	PDB ENTRY 1ZA1	1.9395	49.179	89196	89119	4462	99.98	0.1948	0.1926	0.2061	0.2365	0.2466	Random	41.2092

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	15.002
f_angle_d	1.139
f_chiral_restr	0.077
f_bond_d	0.009
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7140
Nucleic Acid Atoms
Solvent Atoms	574
Heterogen Atoms	120

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing