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- PDB-1tio: HIGH PACKING DENSITY FORM OF BOVINE BETA-TRYPSIN IN CYCLOHEXANE -

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Basic information

Entry
Database: PDB / ID: 1tio
TitleHIGH PACKING DENSITY FORM OF BOVINE BETA-TRYPSIN IN CYCLOHEXANE
ComponentsPROTEIN (BETA-TRYPSIN)
KeywordsHYDROLASE / SERINE PROTEASE / BENZAMIDINE INHIBITED
Function / homology
Function and homology information


trypsin / serpin family protein binding / serine protease inhibitor complex / digestion / endopeptidase activity / serine-type endopeptidase activity / proteolysis / extracellular space / metal ion binding
Similarity search - Function
Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin domain profile. / Serine proteases, trypsin family, serine active site. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Trypsin-like serine proteases ...Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin domain profile. / Serine proteases, trypsin family, serine active site. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Trypsin-like serine proteases / Thrombin, subunit H / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
BENZAMIDINE / CYCLOHEXANE / Serine protease 1
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.93 Å
AuthorsHuang, Q. / Zhu, G. / Wang, Z. / Tang, Q.
CitationJournal: Biochim.Biophys.Acta / Year: 1998
Title: X-ray studies on two forms of bovine beta-trypsin crystals in neat cyclohexane.
Authors: Zhu, G. / Huang, Q. / Wang, Z. / Qian, M. / Jia, Y. / Tang, Y.
History
DepositionSep 17, 1998Deposition site: BNL / Processing site: RCSB
Revision 1.0Sep 23, 1998Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 2.0Aug 4, 2021Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Non-polymer description / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_comp_id / _atom_site.label_comp_id / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _entity.formula_weight / _pdbx_entity_nonpoly.comp_id / _pdbx_nonpoly_scheme.mon_id / _pdbx_nonpoly_scheme.pdb_mon_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id / _struct_site_gen.auth_comp_id / _struct_site_gen.label_comp_id
Revision 2.1Aug 23, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: PROTEIN (BETA-TRYPSIN)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)24,26511
Polymers23,3241
Non-polymers94110
Water3,135174
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)54.540, 58.260, 67.410
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 1 molecules A

#1: Protein PROTEIN (BETA-TRYPSIN)


Mass: 23324.287 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / References: UniProt: P00760, trypsin

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Non-polymers , 5 types, 184 molecules

#2: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#3: Chemical
ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-BEN / BENZAMIDINE / Benzamidine


Mass: 120.152 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C7H8N2
#5: Chemical ChemComp-CHX / CYCLOHEXANE / Cyclohexane


Mass: 84.159 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H12
#6: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 174 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.3 Å3/Da / Density % sol: 46 %
Description: TRYPSIN CRYSTAL WAS SOAKED IN CYCLOHEXANE 12 HOURS BEFORE DATA COLLECTION
Crystal growMethod: vapor diffusion, hanging drop / pH: 6.2
Details: HANGING DROP METHOD: THE PROTEIN WAS DISSOLVED IN 10 MM HAC-NAAC BUFFER (PH 4.1) PRECIPITANT AND RESERVOIR SOLUTION WERE 0.5 M NA2SO4 AND 0.1 M SODIUM CACODYLATE-HCL BUFFER CONTAINING 15% ...Details: HANGING DROP METHOD: THE PROTEIN WAS DISSOLVED IN 10 MM HAC-NAAC BUFFER (PH 4.1) PRECIPITANT AND RESERVOIR SOLUTION WERE 0.5 M NA2SO4 AND 0.1 M SODIUM CACODYLATE-HCL BUFFER CONTAINING 15% (W/V) MGSO4 AND 1.5% (V/V) MPD AT PH 6.2., vapor diffusion - hanging drop
PH range: 4.1-6.2
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 4.1
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
140 mg/mlprotein1drop
210 mMHAc-NaAc1drop
316 mMbenzamidine1drop
41 mM1dropCaCl2
50.1 Msodium cacodylate-HCl1reservoir
615 %(w/v)1reservoirMgSO4
70.5 M1reservoirNa2SO4
81.5 %(v/v)MPD1reservoir

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418
DetectorType: RIGAKU / Date: Apr 15, 1996
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.93→64 Å / Num. obs: 14880 / % possible obs: 88 % / Observed criterion σ(I): 1 / Redundancy: 2.3 % / Rmerge(I) obs: 0.088 / Net I/σ(I): 12
Reflection
*PLUS
% possible obs: 88 % / Num. measured all: 34500

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Processing

SoftwareName: X-PLOR / Version: 3.1 / Classification: refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1BTY

1bty


Resolution: 1.93→8 Å / Rfactor Rfree error: 0.006 / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.232 1484 10 %RANDOM
Rwork0.185 ---
obs0.185 14596 88.8 %-
Displacement parametersBiso mean: 17.7 Å2
Refinement stepCycle: LAST / Resolution: 1.93→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1629 0 55 174 1858
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.007
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.46
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d26
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.18
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
LS refinement shellResolution: 1.93→2.02 Å / Rfactor Rfree error: 0.018 / Total num. of bins used: 8
RfactorNum. reflection% reflection
Rfree0.224 150 7.87 %
Rwork0.225 1440 -
obs--78.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARAM19.PROTOPH19.PRO
X-RAY DIFFRACTION2PARAM19.HETTOPH19.HET
X-RAY DIFFRACTION3PARCHCSDX.PRO
Software
*PLUS
Version: 3.1 / Classification: refinement
Refinement
*PLUS
Lowest resolution: 8 Å / σ(F): 2 / % reflection Rfree: 10 %
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 17.7 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg26
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.18
LS refinement shell
*PLUS
Rfactor Rfree: 0.224 / Rfactor Rwork: 0.225

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