7X44

Crystal structure of chlorotoxin mutant - Q11N

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7X41

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	1 M monosodium phosphate and 0.75 M sodium citrate

Crystal Properties
Matthews coefficient	Solvent content
1.58	22.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 22.42	α = 90
b = 26.115	β = 90
c = 47.421	γ = 90

Symmetry
Space Group	P 21 21 21

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 315r		2016-05-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSRRC BEAMLINE BL13C1	1.00000	NSRRC	BL13C1

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	1.04	30	99.56	0.039	48.9	5.4		13922

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	1.04	1.08			0.109

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	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	7X41	1.04	22.876	13884	672	99.563	0.13124	0.13124	0.13113	0.13336	6.655

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]
0.017			-0.021		0.004

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.361
r_dihedral_angle_3_deg	10.631
r_dihedral_angle_4_deg	8.562
r_dihedral_angle_1_deg	8.46
r_angle_other_deg	1.53
r_angle_refined_deg	1.471
r_lrange_it	1.339
r_lrange_other	1.209
r_rigid_bond_restr	0.781
r_scangle_it	0.574
r_scangle_other	0.571
r_scbond_it	0.506
r_scbond_other	0.506
r_mcangle_other	0.483
r_mcangle_it	0.482
r_mcbond_it	0.333
r_mcbond_other	0.321
r_nbd_refined	0.213
r_symmetry_nbd_other	0.184
r_nbd_other	0.172
r_nbtor_refined	0.165
r_symmetry_nbd_refined	0.153
r_xyhbond_nbd_refined	0.143
r_chiral_restr	0.082
r_symmetry_nbtor_other	0.082
r_symmetry_xyhbond_nbd_other	0.061
r_symmetry_xyhbond_nbd_refined	0.029
r_bond_refined_d	0.008
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	273
Nucleic Acid Atoms
Solvent Atoms	40
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
HKL-3000	phasing