4X6I

Development of N-(Functionalized benzoyl)-homocycloleucyl-glycinonitriles as Potent Cathepsin K Inhibitors.

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ATK

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		295	Lithium sulfate 0.2M, Sodium acetate 0.1M, Peg 8000 30%

Crystal Properties
Matthews coefficient	Solvent content
1.85	33.65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.459	α = 90
b = 54.45	β = 90
c = 87.87	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	CCD	Bruker Platinum 135		2014-01-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	1.54184

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	1.87	46.28	98.31	0.2593	9.96	9.5		14804

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	1.87	1.937	98.16		0.9815		7.4

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	1ATK	1.87	46.28	14064	740	98.31	0.1838	0.181	0.237	RANDOM	8.629

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]
0.26			-0.59		0.33

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.669
r_dihedral_angle_4_deg	16.088
r_dihedral_angle_3_deg	13.866
r_dihedral_angle_1_deg	6.115
r_angle_refined_deg	1.76
r_mcangle_it	1.031
r_angle_other_deg	0.905
r_mcbond_it	0.612
r_mcbond_other	0.611
r_chiral_restr	0.113

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.669
r_dihedral_angle_4_deg	16.088
r_dihedral_angle_3_deg	13.866
r_dihedral_angle_1_deg	6.115
r_angle_refined_deg	1.76
r_mcangle_it	1.031
r_angle_other_deg	0.905
r_mcbond_it	0.612
r_mcbond_other	0.611
r_chiral_restr	0.113
r_bond_refined_d	0.018
r_gen_planes_refined	0.01
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3298
Nucleic Acid Atoms
Solvent Atoms	413
Heterogen Atoms	96

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
PROTEUM PLUS	data reduction

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.