2DDA

Crystal structure of pseudechetoxin from Pseudechis australis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	293	2.4M sodium formate, 6.7%(w/v) glycerol, 0.15M NaCl, 50mM Tris-HCl pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.46	49.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.303	α = 90
b = 61.594	β = 90
c = 251.686	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 210	MIRRORS	2004-05-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	1.0000	Photon Factory	AR-NW12A

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	2.25	50	92.6	0.074	6.1	6.7		42215			29.3

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)
1	2.25	2.33	72.2		0.253	3.5	6.1

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 (All)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.25	48.97	42186	2084	100	0.206	0.203	0.259	RANDOM	32.282

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]
-0.01					0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.995
r_dihedral_angle_3_deg	16.959
r_dihedral_angle_4_deg	14.95
r_dihedral_angle_1_deg	7.51
r_scangle_it	1.973
r_angle_refined_deg	1.263
r_scbond_it	1.202
r_mcangle_it	0.931
r_angle_other_deg	0.815
r_mcbond_it	0.495
r_symmetry_hbond_refined	0.235
r_nbd_refined	0.202
r_symmetry_vdw_other	0.198
r_nbd_other	0.181
r_nbtor_refined	0.181
r_xyhbond_nbd_refined	0.169
r_symmetry_vdw_refined	0.139
r_metal_ion_refined	0.094
r_nbtor_other	0.085
r_mcbond_other	0.084
r_chiral_restr	0.072
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6544
Nucleic Acid Atoms
Solvent Atoms	446
Heterogen Atoms	28

Software

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