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- PDB-3a8c: Crystal Structure of Trypsin complexed with (E)-2-(4-carbamimidoy... -

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Basic information

Entry
Database: PDB / ID: 3a8c
TitleCrystal Structure of Trypsin complexed with (E)-2-(4-carbamimidoylbenzylideneaminooxy)acetic acid (soaking with mixture of [(E)-2-(4-carbamimidoylbenzylideneaminooxy)acetic acid] and [(E)-2-(4-carbamimidoylbenzylideneaminooxy)-2-methylpropanoic acid])
ComponentsCationic trypsin
KeywordsHYDROLASE / In-Crystal Chemical Ligation / Disulfide bond / Metal-binding / Protease / Secreted / Serine protease / Zymogen
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
Chem-O09 / Serine protease 1
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.85 Å
AuthorsYamane, J. / Yao, M. / Tanaka, I.
CitationJournal: To be Published
Title: In-Crystal Chemical Ligation for Drug Discovery
Authors: Yamane, J. / Ooyabu, N. / Yao, M. / Takemoto, H. / Tanaka, I.
History
DepositionOct 5, 2009Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 29, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Nov 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_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.3Oct 23, 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: Cationic trypsin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)23,5863
Polymers23,3241
Non-polymers2612
Water3,621201
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)53.852, 56.913, 66.170
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) / 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-O09 / (E)-2-(4-carbamimidoylbenzylideneaminooxy)acetic acid


Mass: 221.213 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H11N3O3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 201 / 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: 2.17 Å3/Da / Density % sol: 43.42 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 8.5
Details: 0.1M Tris-HCl, 30% PEG 3350, 0.2M Lithium Sulfate, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU FR-E SUPERBRIGHT / Wavelength: 1.54 Å
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 1.85→50 Å / % possible obs: 95.6 % / Observed criterion σ(I): -3 / Redundancy: 6.1 % / Rmerge(I) obs: 0.044 / Rsym value: 0.044 / Net I/σ(I): 32.6
Reflection shellResolution: 1.85→1.92 Å / Redundancy: 6.2 % / Rmerge(I) obs: 0.112 / Mean I/σ(I) obs: 12.3 / Rsym value: 0.112 / % possible all: 92.5

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Processing

Software
NameVersionClassification
LAFIREmodel building
REFMAC5.2.0019refinement
HKL-2000data reduction
HKL-2000data scaling
LAFIREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3A7T

3a7t


Resolution: 1.85→19.6 Å / Cor.coef. Fo:Fc: 0.959 / Cor.coef. Fo:Fc free: 0.932 / SU B: 2.172 / SU ML: 0.068 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.132 / ESU R Free: 0.121 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.19004 858 5 %RANDOM
Rwork0.15184 ---
obs0.15368 16161 99.57 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 15.311 Å2
Baniso -1Baniso -2Baniso -3
1--0.03 Å20 Å20 Å2
2---0.02 Å20 Å2
3---0.05 Å2
Refinement stepCycle: LAST / Resolution: 1.85→19.6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1629 0 17 201 1847
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0110.0221682
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.321.9542284
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0515222
X-RAY DIFFRACTIONr_dihedral_angle_2_deg40.4225.86258
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.04115269
X-RAY DIFFRACTIONr_dihedral_angle_4_deg20.452152
X-RAY DIFFRACTIONr_chiral_restr0.0950.2254
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.021257
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.1950.2772
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3020.21178
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1170.2168
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined0.1480.25
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1460.231
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1460.219
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.7391.51121
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.26421760
X-RAY DIFFRACTIONr_scbond_it2.0913654
X-RAY DIFFRACTIONr_scangle_it3.2314.5524
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.851→1.899 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.208 60 -
Rwork0.147 1125 -
obs--98.83 %

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