5TA6

Crystal structure of PLK1 in complex with a novel 5,6-dihydroimidazolo[1,5-f]pteridine inhibitor.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	0.95 mM succinic acid, 1.7% PEG2000 MME, 0.4 mM zinc acetate, 100 mM HEPES, pH 7.0, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.303	α = 90
b = 66.303	β = 90
c = 153.115	γ = 120

Symmetry
Space Group	P 32 2 1

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		2007-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3	0.987	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	2.5	50	92.7	0.065	12	3.9		13099

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	2.5	2.56	57.4		0.19		3

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		THROUGHOUT	2.5	45.98	12415	647	92.64	0.1827	0.1788	0.2598	RANDOM	52.34

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]
-0.35	-0.18		-0.35		0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.693
r_dihedral_angle_4_deg	18.127
r_dihedral_angle_3_deg	17.316
r_dihedral_angle_1_deg	5.862
r_angle_refined_deg	1.224
r_angle_other_deg	0.697
r_chiral_restr	0.064
r_bond_refined_d	0.007
r_gen_planes_refined	0.004
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.693
r_dihedral_angle_4_deg	18.127
r_dihedral_angle_3_deg	17.316
r_dihedral_angle_1_deg	5.862
r_angle_refined_deg	1.224
r_angle_other_deg	0.697
r_chiral_restr	0.064
r_bond_refined_d	0.007
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2379
Nucleic Acid Atoms
Solvent Atoms	108
Heterogen Atoms	42

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
MOLREP	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.