Experiment: 1TU0

Aspartate Transcarbamoylase Catalytic Chain Mutant E50A Complex with Phosphonoacetamide

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		UNPUBLISHED

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6	295	The Glu50Ala mutant was crystallized in 100 mM sodium citrate, 1 mM 2-mercaptoethanol, and 15% PEG 8000 pH 7.0. Before mounting, 50 mM PAM was added and the crystal soaked, pH 6.0, MICRODIALYSIS, temperature 295K, pH 6.00

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 122.2	α = 90
b = 122.2	β = 90
c = 142.7	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	298	AREA DETECTOR	UCSD MARK III		1998-03-31	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 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	2.55	30	94	0.085	7.37	3.8		37788		2

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	2.55	2.6	89.53		0.36	1.32	3.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	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X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	UNPUBLISHED	2.55	30	37788	1990	94	0.211	0.19		0.2128	0.279	0.2935	RANDOM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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
		7585.11

RMS Deviations
Key	Refinement Restraint Deviation
s_similar_adp_cmpnt	0.105
s_anti_bump_dis_restr	0.037
s_non_zero_chiral_vol	0.027
s_from_restr_planes	0.021
s_angle_d	0.02
s_zero_chiral_vol	0.02
s_bond_d	0.005
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7224
Nucleic Acid Atoms
Solvent Atoms	354
Heterogen Atoms	18

Software

Software
Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
SDMS	data reduction
SDMS	data scaling
X-PLOR	phasing