4X9R

PLK-1 polo-box domain in complex with Bioactive Imidazolium-containing phosphopeptide macrocycle 3B

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	Frozen stocks of protein at 37 mg/mL in 10 mM TRIS pH8, 0.5 M NaCl, 10 mM DTT were thawed and diluted to 10 mg/ml with the same buffer. Complexes with each of three macrocycle compounds (3b, 3c and 4b) were prepared by adding 100 mM stocks of the macrocycle in DMSO directly to the diluted protein to achieve a final concentration of 1 mM. Crystals were grown by hanging drop vapor diffusion, with drops made by mixing equal volumes of protein-macrocycle complex and well solution containing 2-6% PEG-3350. Crystals were cryo-protected by quickly dipping in a solution of 37.5% ethylene glycol in well solution and frozen in liquid nitrogen

Crystal Properties
Matthews coefficient	Solvent content
2	38.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.813	α = 90
b = 50.979	β = 100.24
c = 57.59	γ = 90

Symmetry
Space Group	P 1 21 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	PIXEL	PSI PILATUS 6M		2013-11-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.97950	APS	24-ID-C

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	1.398	50	98.4	0.064	3.1	6.5		42019

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	1.398	1.42	96.3		0.48	1.5	6.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FREE R-VALUE	3RQ7	1.398	37.901	1.35	42002	2000	98.32	0.1507	0.1493	0.1789	random

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.598
f_angle_d	1.472
f_chiral_restr	0.089
f_bond_d	0.012
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1758
Nucleic Acid Atoms
Solvent Atoms	189
Heterogen Atoms	67

Software

Software
Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
Coot	model building

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.