1AH8

STRUCTURE OF THE ORTHORHOMBIC FORM OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		TETRAGONAL FORM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	under oil	5		THE PROTEIN WAS CRYSTALLISED UNDER OIL IN TERASAKI PLATES. THE DROPS CONTAINED 20.5MG ML PROTEIN, 9% PEGME 550, 60MM CALCIUM CHLORIDE, 25% GLYCEROL AND 30MM SODIUM ACETATE PH 5.0, under oil

Crystal Properties
Matthews coefficient	Solvent content
2.93	58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.54	α = 90
b = 112.9	β = 90
c = 44.72	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	IMAGE PLATE	MARRESEARCH	PT-COATED SI TORROIDAL MIRROR	1996-09-09	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.5		SRS	PX9.5

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	25	99.7	0.033	12.8	3.5		34954		1	14.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.15	92.6		0.033	0.092	7.9	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	TETRAGONAL FORM	2.1	8	2	33922	1705	99	0.196	0.196	0.255	RANDOM	25.4

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	26.1
x_scangle_it	3.444
x_scbond_it	2.189
x_mcangle_it	1.822
x_angle_deg	1.3
x_mcbond_it	1.121
x_improper_angle_d	0.66
x_bond_d	0.006
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3432
Nucleic Acid Atoms
Solvent Atoms	530
Heterogen Atoms	24

Software

Software
Software Name	Purpose
TFFC	model building
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling
ROTAVATA	data scaling
TFFC	phasing
X-PLOR	phasing