3MBL

Crystal Structure of the human mitogen-activated protein kinase kinase 1 (MEK 1) in complex with ligand and MgADP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.44	64.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.982	α = 90
b = 81.982	β = 90
c = 129.928	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	ADSC QUANTUM 315r		2006-09-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3	1.0	ALS	5.0.3

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	2.6	50	98.5	0.055	24.4	2.5		15253

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)
	2.6	2.68			0.524	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MOLECULAR REPLACEMENT	THROUGHOUT	2.6	20	14363	759	99.53	0.16876	0.16639	0.21468	RANDOM	78.531

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]
2.06	1.03		2.06		-3.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.36
r_dihedral_angle_4_deg	23.362
r_dihedral_angle_3_deg	17.48
r_scangle_it	7.636
r_dihedral_angle_1_deg	5.978
r_scbond_it	5.128
r_mcangle_it	3.304
r_mcbond_it	1.962
r_angle_refined_deg	1.841
r_nbtor_refined	0.304
r_nbd_refined	0.204
r_symmetry_vdw_refined	0.155
r_xyhbond_nbd_refined	0.136
r_symmetry_hbond_refined	0.124
r_chiral_restr	0.122
r_metal_ion_refined	0.04
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_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	2271
Nucleic Acid Atoms
Solvent Atoms	90
Heterogen Atoms	53

Software

Software
Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling