3V04

Discovery of Novel Allosteric MEK Inhibitors Possessing Classical and Non-classical Bidentate Ser212 Interactions.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1S9J	PDB Entry 1S9J

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	286	16-20 %w/v PEG8K, 0.1M HEPES, 250mM NH4H2PO4, 1mM TCEP, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 286K

Crystal Properties
Matthews coefficient	Solvent content
3.32	62.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.113	α = 90
b = 82.113	β = 90
c = 129.303	γ = 120

Symmetry
Space Group	P 62

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200	CCD	ADSC QUANTUM 315		2008-07-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.0	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	30	99.9	0.062	22.88	5.3		13612	1	3	63.53

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	PDB Entry 1S9J	2.7	20	2	13612	12908	651	99.97	0.21332	0.21187	0.24295	RANDOM	78.628

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]
1.17	0.59		1.17		-1.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.779
r_dihedral_angle_4_deg	15.355
r_dihedral_angle_3_deg	14.462
r_dihedral_angle_1_deg	5.551
r_mcangle_it	2.838
r_scangle_it	2.454
r_mcbond_it	1.651
r_scbond_it	1.405
r_angle_refined_deg	1.049
r_angle_other_deg	0.722
r_symmetry_vdw_refined	0.521
r_symmetry_vdw_other	0.214
r_nbd_other	0.199
r_mcbond_other	0.191
r_nbd_refined	0.179
r_nbtor_refined	0.174
r_xyhbond_nbd_refined	0.143
r_nbtor_other	0.081
r_chiral_restr	0.055
r_metal_ion_refined	0.024
r_symmetry_hbond_refined	0.018
r_bond_refined_d	0.007
r_bond_other_d	0.002
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2261
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	57

Software

Software
Software Name	Purpose
ADSC	data collection
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling