3GY8

A comparative study on the inhibition of bovine beta-trypsin by bis-benzamidines diminazene and pentamidine by X-ray crystallography and ITC

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	14.5% PEG4000, 0.1M ammonium sulfate, 0.05M Tris-HCl, 0.008M CaCl2, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
1.85	33.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.563	α = 90
b = 53.563	β = 90
c = 104.365	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	mirrors	2006-06-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LNLS BEAMLINE D03B-MX1	1.428	LNLS	D03B-MX1

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	1.75	50	98.37	0.039	34.65	5.6	18148	17852	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.75	1.79	98.8		0.149	10.4	5.4	1183

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	1.75	46.37	1	18108	16935	912	98.56	0.17161	0.16901	0.22253	RANDOM	17.466

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]
-0.38	-0.19		-0.38		0.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.811
r_dihedral_angle_4_deg	14.252
r_dihedral_angle_3_deg	13.396
r_dihedral_angle_1_deg	6.777
r_scangle_it	3.625
r_scbond_it	2.709
r_angle_refined_deg	1.605
r_mcangle_it	1.406
r_mcbond_it	0.824
r_nbtor_refined	0.316

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.811
r_dihedral_angle_4_deg	14.252
r_dihedral_angle_3_deg	13.396
r_dihedral_angle_1_deg	6.777
r_scangle_it	3.625
r_scbond_it	2.709
r_angle_refined_deg	1.605
r_mcangle_it	1.406
r_mcbond_it	0.824
r_nbtor_refined	0.316
r_nbd_refined	0.275
r_symmetry_vdw_refined	0.263
r_symmetry_hbond_refined	0.197
r_metal_ion_refined	0.157
r_xyhbond_nbd_refined	0.148
r_chiral_restr	0.089
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1629
Nucleic Acid Atoms
Solvent Atoms	225
Heterogen Atoms	38

Software

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

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.