6AOL

Structure of molecular chaperone Grp94 bound to selective inhibitor methyl 3-chloro-2-(2-{2-[(4-fluorophenyl)methyl]phenyl}ethyl)-4,6-dihydroxybenzoate

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.8	289	30 mg/mL protein in 100 mM bicine, pH 7.8 mixed 1:1 with mother liquor (35-39% PEG400, 7.5-10% glycerol, 100 mM bicine, pH 7.8, 75 mM magnesium chloride, crystals harvested into mother liquor + 2 mM inhibitor, soaked for 4 days. Afterward, glycerol was added to 25% and crystals were harvested and immediately cryocooled with liquid nitrogen.

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.599	α = 90
b = 96.897	β = 90
c = 42.953	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	197.5	CCD	MARMOSAIC 225 mm CCD		2017-06-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	1.00000	APS	22-BM

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	2.76	39.27	98	0.02231	19.3	2		7358

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	2.76	2.863			0.2064

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	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	PDB entry 2GFD	2.764	39.268	1.34	7331	388	98.39	0.211	0.2075	0.2793

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
f_dihedral_angle_d	19.375
f_angle_d	1.097
f_chiral_restr	0.055
f_bond_d	0.009
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1692
Nucleic Acid Atoms
Solvent Atoms	7
Heterogen Atoms	52

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.