3OBL

Crystal structure of the potent anti-HIV cyanobacterial lectin from Oscillatoria Agardhii

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	298	1.2 M NaH2PO4/0.8 M K2HPO4, 0.2 M Li2SO4, 0.1 M CAPS (pH 10.5), VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.71	54.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.752	α = 78.16
b = 47.275	β = 62.99
c = 47.367	γ = 63.14

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	277	IMAGE PLATE	MAR scanner 300 mm plate	MIRRORS	2010-02-25	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	0.9795, 0.9793, 0.9718	APS	22-BM

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	1.1	22.64	92	0.079	7.5	3.81		86175	1	3

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)
	1.1	1.14	83.1		0.434	2.1	3.73	9892

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.2	22.64	1	77522	77522	8658	93.46	0.14024	0.16923	RANDOM	13.854

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]
2.76	0.19	-1.34	-1.23	0.5	-0.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	43.628
r_sphericity_free	25.579
r_sphericity_bonded	13.59
r_dihedral_angle_3_deg	11.352
r_scangle_it	8.27
r_dihedral_angle_4_deg	7.403
r_scbond_it	6.83
r_dihedral_angle_1_deg	6.111
r_mcangle_it	4.926
r_rigid_bond_restr	4.157
r_mcbond_it	3.777
r_mcbond_other	2.525
r_angle_refined_deg	1.356
r_angle_other_deg	0.746
r_chiral_restr	0.099
r_bond_refined_d	0.013
r_gen_planes_refined	0.006
r_gen_planes_other	0.001
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1966
Nucleic Acid Atoms
Solvent Atoms	344
Heterogen Atoms	56

Software

Software
Software Name	Purpose
d*TREK	data scaling
PHENIX	model building
PHASER	phasing
REFMAC	refinement
d*TREK	data reduction
PHENIX	phasing