3CA5

Crystal structure of Sambucus nigra agglutinin II (SNA-II)-tetragonal crystal form- complexed to alpha1 methylgalactose

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	37.78	96.9	0.058	0.058	17.2	4.7	42458	42458			25.2

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	77.2		0.216	0.216	4.3	3.1	4882

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	40281	40281	2125	96.62	0.135	0.135	0.1328	0.17977	RANDOM	25.219

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]
0.1			0.1		-0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.218
r_dihedral_angle_4_deg	20.511
r_dihedral_angle_3_deg	11.952
r_sphericity_free	9.476
r_scangle_it	7.833
r_dihedral_angle_1_deg	6.998
r_sphericity_bonded	6.827
r_scbond_it	5.875
r_mcangle_it	5.225
r_mcbond_it	4.336
r_rigid_bond_restr	3.498
r_angle_refined_deg	1.825
r_nbtor_refined	0.313
r_symmetry_hbond_refined	0.237
r_nbd_refined	0.216
r_symmetry_vdw_refined	0.2
r_xyhbond_nbd_refined	0.185
r_chiral_restr	0.144
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_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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1976
Nucleic Acid Atoms
Solvent Atoms	341
Heterogen Atoms	173

Software

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