2IMA

Clostridium botulinum Neurotoxin Serotype A Light Chain Inhibited by 2,4-dichlorocinnamic hydroxamate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	10-15% PEG 2000 MMe, 0.3M (NH4)2HPO4, 0.05M TRIS, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.445	α = 90
b = 67.257	β = 106.53
c = 98.194	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 4		2006-02-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12B	1.0000	NSLS	X12B

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	1.94	50	93.7	0.074	10.5	2.5	63852	63852

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)
	1.94	2.01	96.3		0.578	2.1	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	1.94	50	63821	60589	3232	93.65	0.19102	0.1886	0.23	0.23695	0.27	RANDOM	29.451

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]
-1.38		-0.9	0.72		0.15

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.656
r_dihedral_angle_4_deg	15.271
r_dihedral_angle_3_deg	14.072
r_dihedral_angle_1_deg	9.22
r_scangle_it	2.617
r_scbond_it	1.896
r_angle_refined_deg	1.456
r_mcangle_it	1.158
r_mcbond_it	0.988
r_angle_other_deg	0.888
r_symmetry_hbond_refined	0.312
r_symmetry_vdw_refined	0.263
r_nbd_refined	0.21
r_mcbond_other	0.197
r_nbd_other	0.194
r_nbtor_refined	0.187
r_symmetry_vdw_other	0.17
r_xyhbond_nbd_refined	0.157
r_metal_ion_refined	0.092
r_chiral_restr	0.089
r_nbtor_other	0.088
r_bond_refined_d	0.014
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001
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	6516
Nucleic Acid Atoms
Solvent Atoms	464
Heterogen Atoms	30

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection