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- PDB-1ce5: BOVINE PANCREAS BETA-TRYPSIN IN COMPLEX WITH BENZAMIDINE -

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Basic information

Entry
Database: PDB / ID: 1ce5
TitleBOVINE PANCREAS BETA-TRYPSIN IN COMPLEX WITH BENZAMIDINE
ComponentsPROTEIN (TRYPSIN)
KeywordsHYDROLASE / HYDROLASE (SERINE PROTEINASE)
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 / Serine proteases, trypsin family, histidine active site. / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin ...: / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Serine proteases, trypsin family, histidine active site. / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / 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 / Serine protease 1
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsOta, N. / Stroupe, C. / Ferreira-Da-Silva, J.M.S. / Shah, S.S. / Mares-Guia, M. / Brunger, A.T.
Citation
Journal: Proteins / Year: 1999
Title: Non-Boltzmann thermodynamic integration (NBTI) for macromolecular systems: relative free energy of binding of trypsin to benzamidine and benzylamine.
Authors: Ota, N. / Stroupe, C. / Ferreira-da-Silva, J.M. / Shah, S.A. / Mares-Guia, M. / Brunger, A.T.
#1: Journal: J.Mol.Biol. / Year: 1989
Title: Crystal structure of bovine beta-trypsin at 1.5 A resolution in a crystal form with low molecular packing density. Active site geometry, ion pairs and solvent structure.
Authors: Bartunik, H.D. / Summers, L.J. / Bartsch, H.H.
#2: Journal: Acta Crystallogr.,Sect.B / Year: 1983
Title: The Geometry of the Reactive Site and of the Peptide Groups in Trypsin, Trypsinogen and its Complexes with Inhibitors
Authors: Marquart, M. / Walter, J. / Deisenhofer, J. / Bode, W. / Huber, R.
History
DepositionMar 16, 1999Deposition site: BNL / Processing site: RCSB
Revision 1.0Mar 23, 1999Provider: repository / Type: Initial release
Revision 1.1Apr 26, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 6, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed ..._citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.4Aug 9, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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.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.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: PROTEIN (TRYPSIN)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)23,6165
Polymers23,3241
Non-polymers2924
Water2,288127
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)63.787, 63.264, 69.249
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 (TRYPSIN)


Mass: 23324.287 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Details: BOVINE PANCREAS BETA-TRYPSIN PURCHASED FROM WORTHINGTON BIOCHEMICAL CORPORATION
Source: (natural) Bos taurus (domestic cattle) / Organ: PANCREAS / References: UniProt: P00760, trypsin

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Non-polymers , 5 types, 131 molecules

#2: Chemical ChemComp-CA / CALCIUM ION


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


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#4: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#5: Chemical ChemComp-BEN / BENZAMIDINE


Mass: 120.152 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C7H8N2
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 127 / Source method: isolated from a natural source / Formula: H2O

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Details

Has protein modificationY

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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: 2.99 Å3/Da / Density % sol: 58.92 %
Crystal growpH: 6 / Details: pH 6.0
Crystal grow
*PLUS
Temperature: 20 ℃ / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
110-30 mg/mlprotein1drop
21.0 Mammonium sulfate1drop
30.05 MMES1drop
40.5 mM1dropCaCl2
52.0 Mammonium sulfate1reservoir
60.1 MMES1reservoir
71.0 mM1reservoirCaCl2

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: RIGAKU / Detector: IMAGE PLATE / Date: Aug 1, 1997 / Details: MIRRORS
RadiationMonochromator: NI FILTER / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.9→24 Å / Num. obs: 21208 / % possible obs: 93.4 % / Observed criterion σ(I): 0 / Redundancy: 3.3 % / Biso Wilson estimate: 12.6 Å2 / Rsym value: 0.07 / Net I/σ(I): 19.25
Reflection shellResolution: 1.9→1.97 Å / Redundancy: 1.96 % / Mean I/σ(I) obs: 5.1 / Rsym value: 0.201 / % possible all: 84
Reflection
*PLUS
Rmerge(I) obs: 0.07
Reflection shell
*PLUS
% possible obs: 84 % / Rmerge(I) obs: 0.201

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 3PTB

3ptb


Resolution: 1.9→24 Å / Rfactor Rfree error: 0.004 / Data cutoff high rms absF: 310285.4 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.186 2090 9.9 %RANDOM
Rwork0.161 ---
obs-21208 93.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 44.1 Å2 / ksol: 0.366 e/Å3
Displacement parametersBiso mean: 22.2 Å2
Baniso -1Baniso -2Baniso -3
1--2.22 Å20 Å20 Å2
2--4.74 Å20 Å2
3----2.52 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.2 Å0.17 Å
Luzzati d res low-5 Å
Luzzati sigma a0.13 Å0.1 Å
Refinement stepCycle: LAST / Resolution: 1.9→24 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1629 0 16 127 1772
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
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_deg1.5
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d29.9
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d0.76
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it2.411.5
X-RAY DIFFRACTIONx_mcangle_it3.372
X-RAY DIFFRACTIONx_scbond_it3.882
X-RAY DIFFRACTIONx_scangle_it5.532.5
LS refinement shellResolution: 1.9→2.02 Å / Rfactor Rfree error: 0.012 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.213 310 9.9 %
Rwork0.184 2837 -
obs--85 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2BENZAMIDINE.PARABENZAMIDINE.TOP
X-RAY DIFFRACTION3METAL_IONS.PARAMETAL_IONS.TOP
X-RAY DIFFRACTION4SULFATE_ION.PARASULFATE_ION.TOP
Software
*PLUS
Name: CNS / Version: 0.3 / Classification: refinement
Refinement
*PLUS
Lowest resolution: 24 Å / σ(F): 0 / % reflection Rfree: 9.9 % / Rfactor obs: 0.161
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 22.2 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_deg1.5
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg29.9
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.76
X-RAY DIFFRACTIONc_mcbond_it1.5
X-RAY DIFFRACTIONc_scbond_it2
X-RAY DIFFRACTIONc_mcangle_it2
X-RAY DIFFRACTIONc_scangle_it2.5
LS refinement shell
*PLUS
Rfactor Rfree: 0.213 / % reflection Rfree: 9.9 % / Rfactor Rwork: 0.184 / Num. reflection obs: 1881

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