2IXA

A-zyme, N-acetylgalactosaminidase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.25		46-50% 2-METHYL-2,4-PENTANEDIOL (MPD), 75 MM NA-CITRATE PH 6.25

Crystal Properties
Matthews coefficient	Solvent content
3.44	65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 87.659	α = 90
b = 87.659	β = 90
c = 299.427	γ = 120

Symmetry
Space Group	P 65 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		2004-05-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

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	2.3	50	98	0.08	25.7	11.3		30652			42.77

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	2.3	2.36	82.8		0.49	4.5	8.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	2.3	47.04	29418	1234	97.8	0.193	0.192	0.22	RANDOM	45.07

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]
2.55	1.28		2.55		-3.83

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.903
r_dihedral_angle_4_deg	19.673
r_dihedral_angle_3_deg	17.574
r_dihedral_angle_1_deg	5.636
r_scangle_it	1.153
r_mcangle_it	1.144
r_angle_refined_deg	1.141
r_mcbond_it	0.916
r_angle_other_deg	0.855
r_scbond_it	0.825
r_symmetry_vdw_other	0.206
r_nbd_other	0.191
r_nbtor_refined	0.175
r_nbd_refined	0.174
r_symmetry_hbond_refined	0.172
r_xyhbond_nbd_refined	0.15
r_symmetry_vdw_refined	0.133
r_nbtor_other	0.085
r_chiral_restr	0.062
r_bond_refined_d	0.008
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3402
Nucleic Acid Atoms
Solvent Atoms	223
Heterogen Atoms	76

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
SHELXD	phasing