1ZB7

Crystal Structure of Botulinum Neurotoxin Type G Light Chain

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	293	6.00% PEG 6000, 0.65M Lithium Chloride, 0.10M Sodium Citrate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.5	64.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 178.866	α = 90
b = 178.866	β = 90
c = 80.864	γ = 120

Symmetry
Space Group	P 62 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	MARMOSAIC 225 mm CCD		2004-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.00863	APS	23-ID-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.35	50	93.9	0.053	24.4	7.5	30233	30233	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.35	2.411	95.3		0.395	4.8	7.1

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	PDB ENTRY 1F82	2.35	24.81	28690	28690	1536	93.97	0.17612	0.17364	0.17364	0.22216	RANDOM	43.78

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]
0.09	0.04		0.09		-0.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.966
r_dihedral_angle_4_deg	22.863
r_dihedral_angle_3_deg	17.414
r_dihedral_angle_1_deg	7.782
r_scangle_it	5.253
r_scbond_it	3.588
r_mcangle_it	2.283
r_angle_refined_deg	2.031
r_mcbond_it	1.831
r_angle_other_deg	1.046
r_symmetry_vdw_refined	0.375
r_mcbond_other	0.3
r_symmetry_vdw_other	0.25
r_symmetry_hbond_refined	0.235
r_metal_ion_refined	0.23
r_nbd_refined	0.214
r_nbd_other	0.203
r_nbtor_refined	0.187
r_xyhbond_nbd_refined	0.17
r_chiral_restr	0.132
r_nbtor_other	0.096
r_bond_refined_d	0.027
r_gen_planes_refined	0.009
r_bond_other_d	0.006
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3322
Nucleic Acid Atoms
Solvent Atoms	197
Heterogen Atoms	14

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement