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- PDB-2zq2: Exploring trypsin S3 pocket -

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Basic information

Entry
Database: PDB / ID: 2zq2
TitleExploring trypsin S3 pocket
ComponentsCationic trypsin
KeywordsHydrolase/Hydrolase Inhibitor / Hydrolase inhibitors / Digestion / Hydrolase / Metal-binding / Protease / Secreted / Serine protease / Zymogen / Hydrolase-Hydrolase Inhibitor complex
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 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 / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / 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
N-cyclooctylglycyl-N-(4-carbamimidoylbenzyl)-L-prolinamide / Chem-13U / Serine protease 1
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 1.4 Å
AuthorsBrandt, T. / Baum, B. / Heine, A. / Klebe, G.
CitationJournal: J.Mol.Biol. / Year: 2011
Title: Congeneric but still distinct: how closely related trypsin ligands exhibit different thermodynamic and structural properties
Authors: Brandt, T. / Holzmann, N. / Muley, L. / Khayat, M. / Wegscheid-Gerlach, C. / Baum, B. / Heine, A. / Hangauer, D. / Klebe, G.
History
DepositionAug 3, 2008Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 4, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.2Feb 27, 2013Group: Other
Revision 1.3Jan 22, 2014Group: Database references
Revision 1.4Oct 11, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 1.5Nov 1, 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 / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.6Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Cationic trypsin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)24,1467
Polymers23,3241
Non-polymers8226
Water4,846269
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)61.400, 63.900, 69.700
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Cationic trypsin / Beta-trypsin / Alpha-trypsin chain 1 / Alpha-trypsin chain 2


Mass: 23324.287 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / Tissue: Pancreas / References: UniProt: P00760, trypsin
#2: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#3: Chemical ChemComp-13U / N-cyclooctylglycyl-N-(4-carbamimidoylbenzyl)-L-prolinamide / (2S)-N-[(4-carbamimidoylphenyl)methyl]-1-[2-(cyclooctylamino)ethanoyl]pyrrolidine-2-carboxamide


Type: Peptide-like / Class: Thrombin inhibitor / Mass: 413.556 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C23H35N5O2
References: N-cyclooctylglycyl-N-(4-carbamimidoylbenzyl)-L-prolinamide
#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 269 / Source method: isolated from a natural source / Formula: H2O
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: 2.931105 Å3/Da / Density % sol: 58.04 %
Crystal growTemperature: 289 K / Method: vapor diffusion, sitting drop / pH: 6
Details: 1.9M Ammonium sulfate, 50mM MES, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 289K

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Data collection

DiffractionMean temperature: 103 K
Diffraction sourceSource: SYNCHROTRON / Site: BESSY / Beamline: 14.2 / Wavelength: 0.91841 Å
DetectorType: MAR CCD 165 mm / Detector: CCD / Date: May 31, 2008
RadiationMonochromator: Double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.91841 Å / Relative weight: 1
ReflectionResolution: 1.4→30 Å / Num. all: 54593 / Num. obs: 54593 / % possible obs: 99.5 % / Redundancy: 3.2 % / Biso Wilson estimate: 13.5 Å2 / Rsym value: 0.053 / Net I/σ(I): 22.3
Reflection shellResolution: 1.4→1.42 Å / Redundancy: 3.2 % / Mean I/σ(I) obs: 2.9 / Num. unique all: 2701 / Rsym value: 0.391 / % possible all: 100

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Processing

Software
NameVersionClassification
SHELXmodel building
SHELXL-97refinement
MAR345CCDdata collection
HKL-2000data reduction
HKL-2000data scaling
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1K1P

1k1p


Resolution: 1.4→10 Å / Num. parameters: 18248 / Num. restraintsaints: 22954 / Cross valid method: FREE R / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
Details: ANISOTROPIC SCALING APPLIED BY THE METHOD OF PARKIN, MOEZZI & HOPE, J.APPL.CRYST.28(1995)53-56 ANISOTROPIC REFINEMENT REDUCED FREE R (NO CUTOFF) BY ?
RfactorNum. reflection% reflectionSelection details
Rfree0.1616 2609 5.1 %RANDOM
Rwork0.1165 ---
all0.1266 51554 --
obs0.1178 42831 94.6 %-
Refine analyzeNum. disordered residues: 8 / Occupancy sum hydrogen: 1583 / Occupancy sum non hydrogen: 1950
Refinement stepCycle: LAST / Resolution: 1.4→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1625 0 55 269 1949
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.012
X-RAY DIFFRACTIONs_angle_d0.03
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0313
X-RAY DIFFRACTIONs_zero_chiral_vol0.069
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.069
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.068
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.004
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.049
X-RAY DIFFRACTIONs_approx_iso_adps0.097

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