8OLR

Structure of yeast 20S proteasome in complex with the natural product beta-lactone inhibitor Cystargolide A

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.8	293	20 mM MgAC2, 13% MPD, 0.1 M MES

Crystal Properties
Matthews coefficient	Solvent content
3.8	67.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 136.96	α = 90
b = 302.05	β = 113.09
c = 146.01	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	DECTRIS EIGER X 16M		2017-12-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	1.0	SLS	X06SA

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	2.8	30	97.7	0.053	13.7	3		261118

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	2.8	2.9	98.4		0.537	2	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	MOLECULAR REPLACEMENT	THROUGHOUT	2.8	15	246442	12970	97.21	0.18454	0.18197	0.20795	RANDOM	83.34

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]
2.05		-1.15	-1.73		0.48

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.74
r_dihedral_angle_3_deg	15.397
r_dihedral_angle_4_deg	14.56
r_long_range_B_refined	8.157
r_long_range_B_other	8.148
r_scangle_other	6.368
r_dihedral_angle_1_deg	6.36
r_mcangle_it	6.208
r_mcangle_other	6.208
r_scbond_it	4.535
r_scbond_other	4.535
r_mcbond_it	4.301
r_mcbond_other	4.301
r_angle_refined_deg	1.309
r_angle_other_deg	1.27
r_rigid_bond_restr	0.95
r_chiral_restr	0.054
r_bond_refined_d	0.004
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.002
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_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	49376
Nucleic Acid Atoms
Solvent Atoms	234
Heterogen Atoms	165

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
REFMAC	phasing