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- PDB-1jrt: HEMIACETAL COMPLEX BETWEEN LEUPEPTIN AND TRYPSIN -

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Basic information

Entry
Database: PDB / ID: 1jrt
TitleHEMIACETAL COMPLEX BETWEEN LEUPEPTIN AND TRYPSIN
Components
  • LEUPEPTIN
  • TRYPSIN
KeywordsHYDROLASE/HYDROLASE INHIBITOR / HYDROLASE / SERINE PROTEASE / DIGESTION / PANCREAS / ZYMOGEN / HYDROLASE (SERINE PROTEASE) / 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
LEUPEPTIN / : / Serine protease 1
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / Resolution: 1.7 Å
AuthorsKurinov, I.V. / Harrison, R.W.
Citation
Journal: Protein Sci. / Year: 1996
Title: Two crystal structures of the leupeptin-trypsin complex.
Authors: Kurinov, I.V. / Harrison, R.W.
#1: Journal: Nat.Struct.Biol. / Year: 1994
Title: Prediction of New Serine Proteinase Inhibitors
Authors: Kurinov, I.V. / Harrison, R.W.
History
DepositionFeb 7, 1996Processing site: BNL
Revision 1.0Oct 14, 1996Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Atomic model / Database references ...Atomic model / Database references / Derived calculations / Non-polymer description / Structure summary / Version format compliance
Revision 1.3Dec 12, 2012Group: Other
Revision 1.4Jun 5, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / struct_conn_type / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site / _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.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_ptnr1_PDB_ins_code / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_conn_type.id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Nov 20, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: TRYPSIN
B: LEUPEPTIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)23,7943
Polymers23,7542
Non-polymers401
Water3,045169
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1010 Å2
ΔGint-15 kcal/mol
Surface area8920 Å2
MethodPISA
Unit cell
Length a, b, c (Å)55.615, 55.615, 110.510
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein 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
#2: Protein/peptide LEUPEPTIN


Type: Oligopeptide / Class: Enzyme inhibitor / Mass: 429.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / References: NOR: NOR00487, LEUPEPTIN, trypsin
#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 169 / Source method: isolated from a natural source / Formula: H2O
Compound detailsTHE LEUPEPTIN IS COVALENTLY CONNECTED TO ACTIVE_SITE SER 195 OF THE ENZYME TO FORM A HEMIACETAL.
Has protein modificationY
Sequence detailsTHERE IS A DISCREPANCY IN THE NORINE AND PDB NUMBERING, AS NORINE COUNTS ACE AND LEU TOGETHER AS ...THERE IS A DISCREPANCY IN THE NORINE AND PDB NUMBERING, AS NORINE COUNTS ACE AND LEU TOGETHER AS ONE RESIDUE. SO THE DBREF WILL REPORT 4 PDB RESIDUES MATCHING NORINE 3 RESIDUE

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.08 Å3/Da / Density % sol: 37 %
Crystal growMethod: vapor diffusion, sitting drop
Details: TRIGONAL SPACE GROUP; 24-26% PEG8000, 0.02M INHIBITOR, 0.2M (NH4)2 SO4, 50MM TRIS-HCL, ROOM TEMPERATURE, SITTING DROP., vapor diffusion - sitting drop
Temp details: room temp
Crystal grow
*PLUS
pH: 8 / Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
130-40 mg/mlprotein1drop
224-26 %PEG80001reservoir
30.02 Minhibitor1reservoir
40.2 Mammonium sulfate1reservoir
550 mMTris-HCl1reservoir

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Data collection

Diffraction sourceWavelength: 1.5418
DetectorType: RIGAKU / Detector: IMAGE PLATE / Date: Jul 1, 1994
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionNum. obs: 64660 / % possible obs: 92.5 % / Observed criterion σ(I): 1 / Redundancy: 2.84 % / Rmerge(I) obs: 0.0989
Reflection
*PLUS
Highest resolution: 1.7 Å

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Processing

Software
NameVersionClassification
PROCESSdata collection
X-PLOR3.1model building
X-PLOR3.1refinement
PROCESSdata reduction
X-PLOR3.1phasing
RefinementResolution: 1.7→8 Å / σ(F): 2
RfactorNum. reflection
Rfree0.218 -
Rwork0.177 -
obs0.177 20553
Displacement parametersBiso mean: 19.6 Å2
Refinement stepCycle: LAST / Resolution: 1.7→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1659 0 1 169 1829
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.013
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_deg2.6
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
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
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS

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