2AGK

Structure of S. cerevisiae His6 protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	298	PEG4000, sodium citrate, MgCl2, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.8	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 101.863	α = 90
b = 71.427	β = 104.71
c = 40.57	γ = 90

Symmetry
Space Group	C 1 2 1

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	ADSC QUANTUM 4		2004-09-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.933	ESRF	ID14-1

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	1.25	20	92.4	0.05	18.89		293459	270881

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)
	1.25	1.3	100	88.1	0.639	2.85

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.3	20	65836	3307	95.48	0.193	0.191	0.216	RANDOM	22.76

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]
-0.36		-0.95	-0.29		0.18

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.874
r_dihedral_angle_4_deg	13.049
r_dihedral_angle_3_deg	11.471
r_rigid_bond_restr	5.382
r_dihedral_angle_1_deg	5.109
r_scbond_it	4.566
r_scangle_it	3.951
r_sphericity_bonded	3.08
r_sphericity_free	2.616
r_mcangle_it	1.602
r_angle_refined_deg	1.117
r_mcbond_it	1.014
r_nbtor_refined	0.308
r_symmetry_vdw_refined	0.262
r_nbd_refined	0.188
r_xyhbond_nbd_refined	0.111
r_symmetry_hbond_refined	0.105
r_chiral_restr	0.082
r_bond_refined_d	0.007
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1876
Nucleic Acid Atoms
Solvent Atoms	344
Heterogen Atoms	26

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SHARP	phasing