5MAG

Crystal structure of MELK in complex with an inhibitor

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		in house MELK structure

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	10-20% PEG 3350 or PEG 4000, 0.1 M BIS TRIS pH 6.5, 0.6M NaCl

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.18	α = 90
b = 62.81	β = 90
c = 94.11	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M-F	Toroidal mirror	2016-10-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.976254	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	2.35	94.11	95.9	0.131	0.981	7.7	4.6		15037

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.35	2.48	99.9		0.369	0.885	3.9	4.8

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	MOLECULAR REPLACEMENT	THROUGHOUT	in house MELK structure	2.35	52.24	14303	694	95.72	0.19616	0.19351	0.25242	RANDOM	36.056

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]
-3.3			-0.09		3.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.189
r_dihedral_angle_4_deg	23.329
r_dihedral_angle_3_deg	15.865
r_dihedral_angle_1_deg	6.259
r_long_range_B_refined	5.768
r_long_range_B_other	5.767
r_scangle_other	3.788
r_angle_other_deg	3.576
r_mcangle_it	3.22
r_mcangle_other	3.219
r_scbond_it	2.265
r_scbond_other	2.264
r_mcbond_other	1.924
r_mcbond_it	1.923
r_angle_refined_deg	1.405
r_chiral_restr	0.079
r_bond_refined_d	0.009
r_gen_planes_other	0.006
r_gen_planes_refined	0.004
r_bond_other_d
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2565
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms	45

Software

Software
Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing