3UE7

X-ray crystal structure of a novel topological analogue of crambin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.7	292	100 mM imidazole, 200 mM Zinc chloride, 7.5% Ethanol, pH 4.7, VAPOR DIFFUSION, HANGING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
1.68	26.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 26.447	α = 90
b = 43.901	β = 108.68
c = 28.716	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	CCD	ADSC QUANTUM 315		2008-12-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.97918	APS	24-ID-E

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	1.08	50	97.1	0.102	15.3	5.5	26080	26080		-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	1.08	1.12	77		0.31	2.4	1.9	2062

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1CRN	1.08	27.21	24705	1297	96.72	0.1456	0.14396	0.17617	RANDOM	9.917

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]
-0.13		0.02	0.64		-0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	24.723
r_dihedral_angle_4_deg	17.134
r_dihedral_angle_3_deg	11.127
r_sphericity_free	8.202
r_dihedral_angle_1_deg	7.46
r_sphericity_bonded	4.54
r_scangle_it	4.14
r_scbond_it	3.288
r_mcangle_it	2.506
r_angle_refined_deg	1.917
r_mcbond_it	1.69
r_rigid_bond_restr	1.68
r_nbtor_refined	0.313
r_xyhbond_nbd_refined	0.224
r_nbd_refined	0.218
r_symmetry_vdw_refined	0.216
r_symmetry_hbond_refined	0.167
r_chiral_restr	0.101
r_bond_refined_d	0.016
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	647
Nucleic Acid Atoms
Solvent Atoms	90
Heterogen Atoms

Software

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