Experiment: 3OKJ

Alpha-keto-aldehyde binding mechanism reveals a novel lead structure motif for proteasome inhibition

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.9	293	Crystalls appeared during one week using 100mM MES, 20mM MG2Ac, 12% MPD, pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.8	67.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 134.59	α = 90
b = 299.83	β = 112.6
c = 143.6	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		2010-05-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	1.0	SLS	X06DA

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	2.7	25	99.5	0.069	14.7	2.5	286938	285432	2	2	41.2

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	2.7	2.8	99.7		0.599	2.61	2.4	29474

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1RYP	2.7	15	284103	284021	14112	99.6	0.232	0.232	0.22	0.259	0.2234	RANDOM	71.6

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]
29.24		-23.94	-39.48		10.24

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.2
c_angle_deg	1.3
c_improper_angle_d	0.74
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	49480
Nucleic Acid Atoms
Solvent Atoms	1293
Heterogen Atoms	78

Software

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