1SZN

THE STRUCTURE OF ALPHA-GALACTOSIDASE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	PEG 6000, potassium phosphate, sodium phosphate , VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.03	38.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.489	α = 90
b = 79.054	β = 90
c = 119.436	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH		2000-01-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LNLS BEAMLINE D03B-MX1	1.54	LNLS	D03B-MX1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.5	65	96.1	0.04	0.074	12.5	7.5	65585	65481		1	28

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	1.54	1.56	89.3		0.475	1.5	1.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	SIRAS	THROUGHOUT	1.54	12	62917	59691	3191	96.14	0.177	0.15282	0.15119	0.18252	RANDOM	22.947

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]
1.25			0.03		-1.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	16.433
r_dihedral_angle_1_deg	6.268
r_scangle_it	3.705
r_angle_other_deg	2.936
r_scbond_it	2.558
r_angle_refined_deg	1.86
r_mcangle_it	1.587
r_mcbond_it	0.987
r_nbtor_other	0.578
r_symmetry_vdw_other	0.238
r_symmetry_vdw_refined	0.223
r_nbd_refined	0.219
r_chiral_restr	0.213
r_nbd_other	0.195
r_symmetry_hbond_refined	0.173
r_xyhbond_nbd_refined	0.159
r_bond_refined_d	0.02
r_gen_planes_refined	0.004
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3213
Nucleic Acid Atoms
Solvent Atoms	623
Heterogen Atoms	223

Software

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