2XTT

Bovine trypsin in complex with evolutionary enhanced Schistocerca gregaria protease inhibitor 1 (SGPI-1-P02)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1K1JPDB ENTRY 1K1J

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
14.6EQUAL AMOUNT OF PROTEIN SOLUTION (9.1 MG/ML PROTEIN COMPLEX IN 0.5 MM MES PH 6.0 BUFFER) AND PRECIPITANT SOLUTION (30% PEG 4000, 0.3 M AMMONIUM ACETATE, 0.1 M NA-ACETATE PH 4.6) WERE MIXED AND EQUILIBRATED AGAINST 0.5 ML PRECIPITANT SOLUTION.
Crystal Properties
Matthews coefficientSolvent content
1.8934.9

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 36.91α = 90
b = 63.61β = 93.85
c = 43.87γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCD2008-09-30MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-1ESRFID14-1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
10.9343.891.30.0417.93.41352722
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
10.930.98540.342.21.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUEPDB ENTRY 1K1J0.93101221282035910.11680.1397RANDOM
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
211820.582225.9
RMS Deviations
KeyRefinement Restraint Deviation
s_anti_bump_dis_restr0.121
s_approx_iso_adps0.116
s_non_zero_chiral_vol0.107
s_zero_chiral_vol0.1
s_from_restr_planes0.0346
s_angle_d0.034
s_similar_adp_cmpnt0.031
s_bond_d0.018
s_rigid_bond_adp_cmpnt0.007
s_similar_dist
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1876
Nucleic Acid Atoms
Solvent Atoms350
Heterogen Atoms5

Software

Software
Software NamePurpose
SHELXL-97refinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing