2FCN

X-ray Crystal Structure of a Chemically Synthesized [D-Val35]Ubiquitin with a Cubic Space Group

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.75	298	by mixing 2 ul of ubiquitin solution (20 mg/ml) and 0.5 ul of crystallization buffer solution. The crystallization buffer was prepared by mixing 3ml of HEPES buffer (0.1M), 3ml of poly(ethylene glycol) 3350 (25%, w/v), and 0.2ml of 1M cadmium acetate, pH 7.75, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.9	57.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.152	α = 90
b = 106.152	β = 90
c = 106.152	γ = 90

Symmetry
Space Group	P 43 3 2

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	MARRESEARCH	MIRRORS	2004-11-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 5ID-B		APS	5ID-B

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	2.2	50	99.6	0.068	37.5	8.6		10927

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	2.2	2.28	99.1		0.66	3	8.7

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1YIW, CHAIN B	2.2	20	10299	555	99.81	0.24	0.233	0.23071	0.27808	RANDOM	53.368

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
r_dihedral_angle_2_deg	36.954
r_dihedral_angle_3_deg	17.041
r_dihedral_angle_4_deg	13.084
r_dihedral_angle_1_deg	6.926
r_scangle_it	3.671
r_scbond_it	2.335
r_angle_refined_deg	1.52
r_mcangle_it	1.454
r_angle_other_deg	1.291
r_mcbond_it	0.857
r_symmetry_vdw_refined	0.338
r_symmetry_vdw_other	0.291
r_nbd_refined	0.235
r_nbd_other	0.223
r_xyhbond_nbd_refined	0.211
r_symmetry_hbond_refined	0.134
r_xyhbond_nbd_other	0.089
r_nbtor_other	0.084
r_chiral_restr	0.075
r_metal_ion_refined	0.033
r_bond_refined_d	0.015
r_gen_planes_refined	0.004
r_gen_planes_other	0.004
r_bond_other_d
r_nbtor_refined
r_metal_ion_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	1170
Nucleic Acid Atoms
Solvent Atoms	42
Heterogen Atoms	24

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing