3V01

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
3.28	62.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.619	α = 90
b = 81.619	β = 90
c = 129.521	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		2006-06-09	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	50	99.7	0.057	24.23	4.8	13370	13330	1	3	71.66

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	2.705	20	2	13370	12675	640	99.74	0.18942	0.187	0.23977	RANDOM	85.632

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]
2.3	1.15		2.3		-3.45

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.976
r_dihedral_angle_4_deg	17.346
r_dihedral_angle_3_deg	16.008
r_dihedral_angle_1_deg	5.746
r_scangle_it	5.638
r_mcangle_it	5.414
r_mcbond_it	3.559
r_scbond_it	3.548
r_angle_refined_deg	1.628
r_angle_other_deg	0.794
r_mcbond_other	0.695
r_nbd_refined	0.216
r_nbtor_refined	0.185
r_nbd_other	0.172
r_symmetry_vdw_other	0.155
r_xyhbond_nbd_refined	0.148
r_symmetry_vdw_refined	0.103
r_nbtor_other	0.086
r_chiral_restr	0.079
r_metal_ion_refined	0.054
r_bond_refined_d	0.013
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2261
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	59

Software

Software
Software Name	Purpose
ADSC	data collection
AMoRE	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling