2WBT

The Structure of a Double C2H2 Zinc Finger Protein from a Hyperthermophilic Archaeal Virus in the Absence of DNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.3		SITTING DROP VAPOR DIFFUSION, 20 MG/ML OF B129 IN 20 MM BIS-TRIS, PH 6.5, 60 MM NACL MIXED WITH 0.1 M AMMONIUM CITRATE DIBASIC, 10-14 % PEG 4000

Crystal Properties
Matthews coefficient	Solvent content
2.7	0.55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.378	α = 90
b = 120.464	β = 90
c = 51.687	γ = 90

Symmetry
Space Group	P 21 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	110	CCD	MARRESEARCH	FLAT COLLIMATING MIRROR, DOUBLE CRYSTAL MONOCHROMATOR, TOROID FOCUSING MIRROR	2006-03-18	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	1.2833, 1.2830, 1.1696	SSRL	BL9-2

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	2.7	50	78.7	0.07	17.2	2.9		8209		5

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	2.7	2.77	78.8		0.24	4.4	2.8

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	NONE	2.7	20	6954	360	78.9	0.233	0.231	0.2342	0.269	0.2694	RANDOM	23.08

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]
-0.01			0.15		-0.14

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.645
r_dihedral_angle_4_deg	21.386
r_dihedral_angle_3_deg	14.512
r_dihedral_angle_1_deg	5.289
r_angle_refined_deg	1.124
r_angle_other_deg	1.005
r_scangle_it	0.541
r_symmetry_vdw_refined	0.426
r_mcangle_it	0.364
r_mcbond_it	0.346
r_scbond_it	0.317
r_symmetry_vdw_other	0.237
r_nbd_other	0.184
r_nbtor_refined	0.169
r_nbd_refined	0.166
r_symmetry_hbond_refined	0.151
r_xyhbond_nbd_refined	0.121
r_nbtor_other	0.083
r_chiral_restr	0.054
r_bond_refined_d	0.034
r_mcbond_other	0.031
r_metal_ion_refined	0.02
r_bond_other_d	0.009
r_gen_planes_refined	0.002
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1905
Nucleic Acid Atoms
Solvent Atoms	17
Heterogen Atoms	4

Software

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