1GIR

CRYSTAL STRUCTURE OF THE ENZYMATIC COMPONET OF IOTA-TOXIN FROM CLOSTRIDIUM PERFRINGENS WITH NADPH

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1			277	PEG4000, NADPH, temperature 277.0K

Crystal Properties
Matthews coefficient	Solvent content
2.58	52.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.6	α = 90
b = 88.37	β = 90
c = 93.5	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	293	CCD	ADSC QUANTUM			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-18B		Photon Factory	BL-18B

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	2.1	20	91.2	0.053	7.6	1.4	26770	26770			9.3

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)
	2.1	2.18	78.6		0.297

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	2.1	14.91	1	24246	2385	82.3	0.205	0.248	RANDOM	27.3

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]
-1.07			-1.32		2.39

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23
c_scangle_it	3.78
c_mcangle_it	2.5
c_scbond_it	2.48
c_mcbond_it	1.55
c_angle_deg	1.5
c_improper_angle_d	1.07
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3347
Nucleic Acid Atoms
Solvent Atoms	139
Heterogen Atoms	48

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SOLVE	phasing
CNS	refinement
DPS	data reduction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.