2O53

Crystal structure of apo-Aspartoacylase from human brain

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	Protein concentration 8-10 mg/ml, 0.05 M Sodium citrate pH 6.0, 0.3 M K2HPO4, 19% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.76	67.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 143.794	α = 90
b = 143.794	β = 90
c = 104.076	γ = 90

Symmetry
Space Group	P 42 21 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	MARMOSAIC 300 mm CCD	Kirkpatrick-Baez pair of focusing bimorph mirrors	2006-10-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	1.033	APS	23-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.7	50	87.3	0.062	17.8	3.9		26648			65.3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.7	2.8	47.2		0.306	2.8	2.5	1409

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	PDB entry 2O4H	2.7	50	23564	1260	81.31	0.21891	0.21632	0.26867	RANDOM	43.845

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			0.04		-0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.067
r_dihedral_angle_3_deg	19.593
r_dihedral_angle_4_deg	15.162
r_dihedral_angle_1_deg	6.987
r_scangle_it	2.041
r_angle_refined_deg	1.469
r_scbond_it	1.286
r_mcangle_it	1.111
r_mcbond_it	0.627
r_symmetry_hbond_refined	0.538
r_nbtor_refined	0.316
r_nbd_refined	0.225
r_symmetry_vdw_refined	0.209
r_xyhbond_nbd_refined	0.144
r_chiral_restr	0.097
r_bond_refined_d	0.013
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4860
Nucleic Acid Atoms
Solvent Atoms	30
Heterogen Atoms	22

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
CCP4	phasing