3HNX

Crystal structure of a designed Cyanovirin-N homolog lectin; LKAMG in P212121 space group

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8	277	50 mg/ml protein concentration in 0.2 M Li2SO4, 0.1 M Tris-HCl (pH 8.5), and 30% PEG 4000 at protein to mother liquor ratio of 8 to 1, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.506	α = 90
b = 46.204	β = 90
c = 50.377	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	CCD	RIGAKU SATURN 944	MIRRORS	2006-10-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E SUPERBRIGHT

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	1.35	27.26	97.7	0.039	40.7	13.32		23394		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)
	1.35	1.4	77.3		0.337	2.7	2.94

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	3HNU	1.37	27.26	21673	1168	99.5	0.17	0.168	0.21	RANDOM	18.02

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]
-0.21			-0.31		0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.3
r_dihedral_angle_4_deg	21.589
r_dihedral_angle_3_deg	11.664
r_sphericity_free	9.944
r_dihedral_angle_1_deg	6.984
r_sphericity_bonded	6.211
r_scangle_it	5.815
r_scbond_it	4.038
r_mcangle_it	3.135
r_rigid_bond_restr	2.271
r_mcbond_it	2.097
r_angle_refined_deg	1.09
r_chiral_restr	0.099
r_gen_planes_refined	0.012
r_bond_refined_d	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
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	932
Nucleic Acid Atoms
Solvent Atoms	151
Heterogen Atoms

Software

Software
Software Name	Purpose
StructureStudio	data collection
PHASER	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling