2GQ0

Crystal Structure of the Middle Domain of HtpG, the E. coli Hsp90

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	0.2 M SODIUM ACETATE TRIHYDRATE, 0.1 M TRIS PH 8.5, 27-32% PEG 4000 OR PEG 2000 MME, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2	38.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.567	α = 90
b = 149.167	β = 99.01
c = 60.224	γ = 90

Symmetry
Space Group	P 1 21 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 210		2003-10-25	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 210		2004-01-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	0.97959	ALS	8.3.1
2	SYNCHROTRON	ALS BEAMLINE 8.2.1	1.0781	ALS	8.2.1

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
1,2	1.9	20	97.7	0.107	23		85118	42074

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)
	1.9	1.93	98.1		0.344	4.9	3.5

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1HK7	1.9	19.83	43129	39564	2129	96.67	0.17725	0.17524	0.21438	RANDOM	17.444

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		-0.01	0.03		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.938
r_dihedral_angle_4_deg	17.3
r_dihedral_angle_3_deg	13.887
r_dihedral_angle_1_deg	5.784
r_scangle_it	3.506
r_scbond_it	2.451
r_mcangle_it	1.564
r_mcbond_it	1.402
r_angle_refined_deg	1.37
r_angle_other_deg	0.922
r_mcbond_other	0.223
r_nbd_refined	0.207
r_symmetry_vdw_other	0.199
r_nbd_other	0.195
r_nbtor_refined	0.181
r_symmetry_vdw_refined	0.177
r_xyhbond_nbd_refined	0.172
r_symmetry_hbond_refined	0.172
r_nbtor_other	0.086
r_chiral_restr	0.085
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4346
Nucleic Acid Atoms
Solvent Atoms	481
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
CNS	refinement
DENZO	data reduction
PDB_EXTRACT	data extraction
CNS	phasing