3AUB

A simplified BPTI variant stabilized by the A14G and A38V substitutions

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	293	15% PEG4000 ,15% Iisopropanol, 0.1M Sodium acetate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.333	α = 90
b = 39.058	β = 101.59
c = 49.231	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	CCD	ADSC QUANTUM 210		2006-12-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	1.000	Photon Factory	AR-NW12A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1	48.224	100	0.294	0.243		4	53613	53613	3	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	1	1.04	100		0.294	0.243	4	53613

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	4PTI	1	48.22	3	53613	49180	2624	96.63	0.16659	0.16591	0.17931	RANDOM	11.401

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]
0.21		0.2	0.02		-0.15

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	19.288
r_dihedral_angle_3_deg	12.008
r_dihedral_angle_4_deg	11.142
r_dihedral_angle_1_deg	6.022
r_sphericity_bonded	1.944
r_sphericity_free	1.77
r_scangle_it	1.638
r_scbond_it	1.398
r_angle_refined_deg	1.131
r_rigid_bond_restr	1.009
r_mcangle_it	0.904
r_mcbond_it	0.595
r_nbtor_refined	0.316
r_nbd_refined	0.189
r_symmetry_vdw_refined	0.147
r_symmetry_hbond_refined	0.123
r_xyhbond_nbd_refined	0.087
r_chiral_restr	0.081
r_bond_refined_d	0.006
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	842
Nucleic Acid Atoms
Solvent Atoms	253
Heterogen Atoms

Software

Software
Software Name	Purpose
HKL-2000	data collection
Coot	model building
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling