2H8I

Crystal Structure of the Bothropstoxin-I complexed with polyethylene glycol

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	20% PEG 400, 2M ammonium sulphate, 0.1M HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.019	α = 90
b = 56.019	β = 90
c = 127.568	γ = 120

Symmetry
Space Group	P 31 2 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	MAR CCD 165 mm		2005-06-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LNLS BEAMLINE D03B-MX1	1.438	LNLS	D03B-MX1

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	1.9	40	99.3	0.053			21766	18722	2	3

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	1.9	1.94	98.8

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.9	10	18722	17758	964	99.6	0.262	0.22757	0.22504	0.27688	RANDOM	41.481

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]
0.17	0.09		0.17		-0.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.26
r_dihedral_angle_4_deg	22.06
r_dihedral_angle_3_deg	20.107
r_dihedral_angle_1_deg	8.02
r_scangle_it	4.107
r_scbond_it	2.821
r_angle_refined_deg	2.145
r_mcangle_it	1.859
r_mcbond_it	1.148
r_nbtor_refined	0.322
r_symmetry_vdw_refined	0.304
r_nbd_refined	0.251
r_chiral_restr	0.202
r_xyhbond_nbd_refined	0.166
r_symmetry_hbond_refined	0.131
r_bond_refined_d	0.02
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1902
Nucleic Acid Atoms
Solvent Atoms	122
Heterogen Atoms	14

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
DENZO	data reduction
AMoRE	phasing