1SIF

Crystal structure of a multiple hydrophobic core mutant of ubiquitin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	288	31% Peg 4K, 0.05M citrate pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 288.0K

Crystal Properties
Matthews coefficient	Solvent content
2.78	55.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.806	α = 90
b = 49.022	β = 90
c = 75.856	γ = 90

Symmetry
Space Group	I 2 2 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	IMAGE PLATE	RIGAKU RAXIS IV	mirrors	2002-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

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	2.18	41.2	99.8	0.052	10.8	4.8	4810	4796			28.8

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	2.18	2.3	99.4		0.182	4.6	4.7

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	1UBQ	2.18	14	4557	217	99.83	0.19586	0.19586	0.19333	0.24848	RANDOM	26.918

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]
-2.81			-0.63		3.43

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	8.671
r_scangle_it	5.71
r_scbond_it	3.448
r_mcangle_it	2.33
r_angle_refined_deg	2.093
r_mcbond_it	1.355
r_nbd_refined	0.252
r_symmetry_hbond_refined	0.208
r_symmetry_vdw_refined	0.206
r_xyhbond_nbd_refined	0.205
r_chiral_restr	0.136
r_bond_refined_d	0.023
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	556
Nucleic Acid Atoms
Solvent Atoms	49
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
AMoRE	phasing