3BXM

Structure of an inactive mutant of human glutamate carboxypeptidase II [GCPII(E424A)] in complex with N-acetyl-Asp-Glu (NAAG)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	293	33% (v/v) pentaerythritol propoxylate PO/OH 5/4, 0.5% (w/v) PEG 3350, 100 mM Tris-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.3	62.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 102.063	α = 90
b = 129.801	β = 90
c = 159.589	γ = 90

Symmetry
Space Group	I 2 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	MARMOSAIC 225 mm CCD		2006-11-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	1.00	APS	22-BM

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	1.7	20	98.8	0.105	14.6	8.3	113478	113478	-3	-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	1.7	1.76	96.9		0.393	3.5	6.5	11035

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	FOURIER SYNTHESIS	THROUGHOUT	pdb entry 2oot	1.71	15	111852	111852	1374	98.57	0.18465	0.18465	0.18429	0.21309	RANDOM	30.376

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]
0.98			-2.23		1.25

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.067
r_dihedral_angle_4_deg	16.605
r_dihedral_angle_3_deg	14.089
r_sphericity_bonded	8.248
r_sphericity_free	7.396
r_dihedral_angle_1_deg	5.76
r_scangle_it	4.331
r_scbond_it	2.938
r_mcangle_it	1.92
r_angle_refined_deg	1.87
r_mcbond_it	1.265
r_nbtor_refined	0.323
r_symmetry_vdw_refined	0.246
r_nbd_refined	0.212
r_symmetry_hbond_refined	0.194
r_xyhbond_nbd_refined	0.15
r_chiral_restr	0.145
r_metal_ion_refined	0.06
r_bond_refined_d	0.021
r_gen_planes_refined	0.01
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5546
Nucleic Acid Atoms
Solvent Atoms	496
Heterogen Atoms	180

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling