2FPQ

Crystal Structure of Botulinum Neurotoxin Type D Light Chain

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	277	15% PEG 4000, 200MM POTASSIUM THIOCYANATE, 100MM SODIUM ACETATE, PH 5.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 277K, pH 5.50

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.829	α = 90
b = 89.818	β = 94.29
c = 54.4	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 210		2005-10-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1		ALS	8.2.1

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	1.65	50	95.2	0.049	21.6			53579		2	35.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.65	1.69	90.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.65	44.9	48292	2594	94.9	0.184	0.182	0.219	RANDOM	25.84

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]
0.19		-0.2	-0.34		0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.511
r_dihedral_angle_4_deg	18.309
r_dihedral_angle_3_deg	14.296
r_dihedral_angle_1_deg	14.004
r_scangle_it	4.013
r_scbond_it	2.647
r_angle_refined_deg	1.715
r_mcangle_it	1.633
r_mcbond_it	0.989
r_angle_other_deg	0.895
r_mcbond_other	0.312
r_nbd_refined	0.227
r_symmetry_hbond_refined	0.221
r_nbd_other	0.197
r_symmetry_vdw_other	0.196
r_nbtor_refined	0.188
r_xyhbond_nbd_refined	0.175
r_symmetry_vdw_refined	0.167
r_chiral_restr	0.114
r_nbtor_other	0.088
r_metal_ion_refined	0.067
r_bond_refined_d	0.019
r_gen_planes_refined	0.008
r_bond_other_d	0.006
r_gen_planes_other	0.002
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3331
Nucleic Acid Atoms
Solvent Atoms	375
Heterogen Atoms	2

Software

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