2Z5B

Crystal Structure of a Novel Chaperone Complex for Yeast 20S Proteasome Assembly

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	25mM MES, 50mM KH2PO4, 16%(w/v) PEG 8000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
2	VAPOR DIFFUSION, HANGING DROP	7	293	0.1M HEPES, 4.1M NaCl, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.487	α = 90
b = 57.487	β = 90
c = 82.206	γ = 120

Symmetry
Space Group	P 31

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 DIP-6040		2006-07-18	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	Bruker DIP-6040		2006-12-09	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.9000	SPring-8	BL44XU
2	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.96408, 0.97925, 0.97945	SPring-8	BL44XU

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	1.96	49.81	98	0.059	24.6	4		21419		-3

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)
	1.96	2.03	93.7		0.187		2.6

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	MAD	THROUGHOUT	1.96	49.81	20240	1096	97.9	0.24185	0.23953	0.28727	RANDOM	40.874

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]
1.37	0.69		1.37		-2.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.382
r_dihedral_angle_4_deg	20.243
r_dihedral_angle_3_deg	17.504
r_dihedral_angle_1_deg	7.558
r_scangle_it	2.558
r_scbond_it	1.722
r_mcangle_it	1.72
r_angle_refined_deg	1.393
r_mcbond_it	1.014
r_nbtor_refined	0.305
r_nbd_refined	0.226
r_symmetry_vdw_refined	0.208
r_symmetry_hbond_refined	0.18
r_xyhbond_nbd_refined	0.17
r_chiral_restr	0.109
r_bond_refined_d	0.01
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2077
Nucleic Acid Atoms
Solvent Atoms	31
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing