1PG5

CRYSTAL STRUCTURE OF THE UNLIGATED (T-STATE) ASPARTATE TRANSCARBAMOYLASE FROM THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS ACIDOCALDARIUS

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4	298	ammonium sulfate, sodium acetate, pH 4, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.37	63.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 132.853	α = 90
b = 132.853	β = 90
c = 140.279	γ = 120

Symmetry
Space Group	P 63 2 2

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	MARRESEARCH		2002-02-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	1.00	ELETTRA	5.2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.59	20	99.7			23210	23141

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.59	2.64	98.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 8AT1	2.6	20	21788	1156	99.73	0.19521	0.19521	0.19291	0.23862	RANDOM	26.444

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]
1.06	0.53		1.06		-1.58

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	7.643
r_scangle_it	5.132
r_scbond_it	3.001
r_angle_refined_deg	2.452
r_mcangle_it	2.003
r_angle_other_deg	1.103
r_mcbond_it	1.067
r_symmetry_vdw_other	0.351
r_nbd_other	0.247
r_nbd_refined	0.22
r_symmetry_vdw_refined	0.185
r_xyhbond_nbd_refined	0.178
r_chiral_restr	0.137
r_nbtor_other	0.103
r_symmetry_hbond_refined	0.102
r_bond_refined_d	0.025
r_gen_planes_refined	0.009
r_gen_planes_other	0.009
r_bond_other_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3499
Nucleic Acid Atoms
Solvent Atoms	93
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing