3GXD

Crystal structure of Apo acid-beta-glucosidase pH 4.5

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2NT0	PDB entry 2NT0

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	4.5	298	0.8 M Na H2PO4, 0.8 M K H2PO4, 0.1 M Citrate pH 5.5 soaked with acetate buffer pH 4.5 and 1.8 M Li2SO4 prior to freezing, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.21	61.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.442	α = 90
b = 91.703	β = 111.04
c = 152.491	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.0	APS	23-ID-D

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	2.5	142					81268

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	2.5	2.56			2.1

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		THROUGHOUT	PDB entry 2NT0	2.5	42.14	81268	4342	87.66	0.208	0.204	0.275	RANDOM	49.621

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]
0.08		0.06	-0.14		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.923
r_dihedral_angle_4_deg	23.621
r_dihedral_angle_3_deg	19.519
r_dihedral_angle_1_deg	7.851
r_scangle_it	3.501
r_scbond_it	2.223
r_angle_refined_deg	1.873
r_mcangle_it	1.668
r_mcbond_it	0.955
r_nbtor_refined	0.322
r_symmetry_vdw_refined	0.269
r_nbd_refined	0.241
r_xyhbond_nbd_refined	0.184
r_symmetry_hbond_refined	0.16
r_chiral_restr	0.128
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
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_refined
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
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15720
Nucleic Acid Atoms
Solvent Atoms	223
Heterogen Atoms	334

Software

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