2GTY

Crystal structure of unliganded griffithsin

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2GUX	pdb entry 2GUX

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4	293	0.2M ammonium sulfate, 30% PEG 4000, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33.98	α = 90
b = 64.65	β = 90
c = 96.32	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	MARMOSAIC 300 mm CCD		2005-12-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.3	50	99.8	0.062	14	4.6	53034	53034		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.3	1.35	99.1		0.382	2.5	2.7	5175

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	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 2GUX	1.3	30	53034	52949	2687	99.55	0.159	0.159	0.159	0.189	RANDOM	19.484

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]
0.7			-0.37		-0.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.54
r_dihedral_angle_4_deg	15.936
r_dihedral_angle_3_deg	9.939
r_dihedral_angle_1_deg	6.534
r_scangle_it	4.929
r_scbond_it	3.713
r_mcangle_it	2.533
r_mcbond_it	1.745
r_angle_refined_deg	1.458
r_nbtor_refined	0.312
r_nbd_refined	0.207
r_symmetry_vdw_refined	0.196
r_xyhbond_nbd_refined	0.14
r_symmetry_hbond_refined	0.127
r_chiral_restr	0.103
r_bond_refined_d	0.021
r_gen_planes_refined	0.007
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
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1840
Nucleic Acid Atoms
Solvent Atoms	283
Heterogen Atoms	64

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
DENZO	data reduction
HKL-2000	data scaling
SCALEPACK	data scaling
PHASER	phasing