2ATB

Triple mutant 8D9D10V of scorpion toxin LQH-alpha-IT

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	0.01M Cobaltous Chlorid hexahydrate, 0.1M Sodium Acetate trihydrate, 1M of 1,6 Hexnediol, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.67	66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.907	α = 90
b = 70.907	β = 90
c = 170.681	γ = 90

Symmetry
Space Group	I 41 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	CCD	ADSC QUANTUM 4	mirrors	2003-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.933	ESRF	ID14-4

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	1.6	65.51	99.9	0.093			29230	29230

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.6	1.63	99.5		0.722	0.052	2.3	6.8	1403

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	2ASC	1.6	40	29202	29202	1484	99.91	0.129	0.129	0.127	0.17	RANDOM	19.481

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]
0.72			0.72		-1.44

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	31.966
r_dihedral_angle_2_deg	27.993
r_scangle_it	14.04
r_dihedral_angle_3_deg	13.374
r_scbond_it	12.471
r_dihedral_angle_4_deg	11.804
r_sphericity_bonded	9.444
r_mcangle_it	6.994
r_mcbond_it	6.774
r_dihedral_angle_1_deg	6.342
r_rigid_bond_restr	6.318
r_mcbond_other	3.265
r_angle_refined_deg	1.306
r_angle_other_deg	0.953
r_symmetry_hbond_refined	0.327
r_symmetry_vdw_other	0.237
r_xyhbond_nbd_refined	0.234
r_nbd_other	0.2
r_nbd_refined	0.197
r_nbtor_refined	0.184
r_chiral_restr	0.086
r_nbtor_other	0.084
r_symmetry_vdw_refined	0.071
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1016
Nucleic Acid Atoms
Solvent Atoms	211
Heterogen Atoms	17

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ProDC	data collection