3FUS

Improved Structure of the Unliganded Simian Immunodeficiency Virus gp120 Core

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
4.66	73.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.048	α = 90
b = 108.048	β = 90
c = 117.701	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIRAS	THROUGHOUT	4	25.58	5842	279	100	0.34618	0.34618	0.34581	0.35351	RANDOM	131.846

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]
-0.61			-0.61		1.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	45.59
r_dihedral_angle_3_deg	24.328
r_dihedral_angle_4_deg	17.95
r_dihedral_angle_1_deg	7.717
r_angle_refined_deg	2.055
r_symmetry_vdw_refined	0.43
r_nbtor_refined	0.342
r_symmetry_hbond_refined	0.322
r_nbd_refined	0.307
r_xyhbond_nbd_refined	0.261
r_chiral_restr	0.173
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
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_it
r_mcbond_other
r_mcangle_it
r_scbond_it
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2470
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	670

Software

Software
Software Name	Purpose
REFMAC	refinement