1S9J

X-ray structure of the human mitogen-activated protein kinase kinase 1 (MEK1) in a complex with ligand and MgATP

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		Iodine substructure

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	288	PEG8K, Ammonium phosphate, Imidazole-malate, DTT, pH 5, VAPOR DIFFUSION, HANGING DROP, temperature 288K

Crystal Properties
Matthews coefficient	Solvent content
3.27	62.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.591	α = 90
b = 81.591	β = 90
c = 129.213	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	100	CCD	MARRESEARCH		2001-05-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.000	APS	17-ID

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	2.4	48		0.052	31	6.5	18590	18389

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	2.4	2.46	0.74		0.32	1.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	Iodine-SAD	THROUGHOUT	Iodine substructure	2.4	47.7	17466	923	96.45	0.24577	0.24458	0.26933	RANDOM	20.815

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]
1.92	0.96		1.92		-2.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.981
r_scangle_it	1.823
r_scbond_it	0.997
r_angle_refined_deg	0.966
r_mcangle_it	0.862
r_angle_other_deg	0.715
r_mcbond_it	0.468
r_nbd_other	0.186
r_symmetry_vdw_other	0.176
r_nbd_refined	0.161
r_symmetry_vdw_refined	0.14
r_xyhbond_nbd_refined	0.105
r_symmetry_hbond_refined	0.098
r_nbtor_other	0.08
r_chiral_restr	0.054
r_metal_ion_refined	0.053
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_mcbond_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	109
Heterogen Atoms	59

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
CCP4	data scaling
CNX	phasing