3CA3

Crystal structure of Sambucus Nigra Agglutinin II (SNA-II)-tetragonal crystal form- complexed to N-Acetylgalactosamine

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	293	PROTEIN 16 MG/ML, AMMONIUM SULFATE 2.0 M, SODIUM ACETATE 100 mM, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.67	53.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.124	α = 90
b = 126.124	β = 90
c = 76.039	γ = 90

Symmetry
Space Group	I 41 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	MAR CCD 165 mm		2003-09-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A	0.9795	ESRF	BM30A

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	1.55	34.74	96.6	0.052	0.052	21.5	4.4	42644	42644			14.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.55	1.64	78		0.135	0.135	7.1	2.7	4945

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	Sambucus nigra agglutinin II, tetragonal crystal form	1.55	20	40982	40982	2179	97.71	0.12451	0.12451	0.12197	0.1731	RANDOM	14.324

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]
0.01			0.01		-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.622
r_dihedral_angle_4_deg	22.391
r_dihedral_angle_3_deg	11.69
r_sphericity_free	10.733
r_scangle_it	7.689
r_dihedral_angle_1_deg	7.236
r_scbond_it	5.87
r_sphericity_bonded	5.037
r_mcangle_it	4.587
r_mcbond_it	4.005
r_rigid_bond_restr	2.962
r_mcbond_other	2.672
r_angle_refined_deg	1.857
r_angle_other_deg	1.059
r_symmetry_vdw_other	0.295
r_nbd_refined	0.227
r_nbd_other	0.221
r_symmetry_vdw_refined	0.215
r_symmetry_hbond_refined	0.192
r_nbtor_refined	0.171
r_xyhbond_nbd_refined	0.15
r_chiral_restr	0.127
r_nbtor_other	0.11
r_bond_refined_d	0.021
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.002
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1984
Nucleic Acid Atoms
Solvent Atoms	330
Heterogen Atoms	217

Software

Software
Software Name	Purpose
REFMAC	refinement
DNA	data collection
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing