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- PDB-1k21: HUMAN THROMBIN-INHIBITOR COMPLEX -

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Basic information

Entry
Database: PDB / ID: 1k21
TitleHUMAN THROMBIN-INHIBITOR COMPLEX
Components
  • (Prothrombin) x 2
  • Hirudin variant-2
KeywordsHYDROLASE/HYDROLASE INHIBITOR / SERINE PROTEASE / HYDROLASE-HYDROLASE INHIBITOR COMPLEX
Function / homology
Function and homology information


cytolysis by host of symbiont cells / thrombospondin receptor activity / Defective factor XII causes hereditary angioedema / thrombin / thrombin-activated receptor signaling pathway / negative regulation of astrocyte differentiation / regulation of blood coagulation / positive regulation of phospholipase C-activating G protein-coupled receptor signaling pathway / neutrophil-mediated killing of gram-negative bacterium / Defective F8 cleavage by thrombin ...cytolysis by host of symbiont cells / thrombospondin receptor activity / Defective factor XII causes hereditary angioedema / thrombin / thrombin-activated receptor signaling pathway / negative regulation of astrocyte differentiation / regulation of blood coagulation / positive regulation of phospholipase C-activating G protein-coupled receptor signaling pathway / neutrophil-mediated killing of gram-negative bacterium / Defective F8 cleavage by thrombin / Platelet Aggregation (Plug Formation) / ligand-gated ion channel signaling pathway / positive regulation of collagen biosynthetic process / negative regulation of platelet activation / negative regulation of blood coagulation / positive regulation of blood coagulation / negative regulation of fibrinolysis / regulation of cytosolic calcium ion concentration / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Gamma-carboxylation of protein precursors / Common Pathway of Fibrin Clot Formation / Removal of aminoterminal propeptides from gamma-carboxylated proteins / fibrinolysis / Intrinsic Pathway of Fibrin Clot Formation / negative regulation of proteolysis / negative regulation of cytokine production involved in inflammatory response / Peptide ligand-binding receptors / positive regulation of release of sequestered calcium ion into cytosol / Regulation of Complement cascade / acute-phase response / Cell surface interactions at the vascular wall / positive regulation of receptor signaling pathway via JAK-STAT / growth factor activity / lipopolysaccharide binding / serine-type endopeptidase inhibitor activity / positive regulation of insulin secretion / platelet activation / response to wounding / positive regulation of protein localization to nucleus / Golgi lumen / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of reactive oxygen species metabolic process / antimicrobial humoral immune response mediated by antimicrobial peptide / blood coagulation / regulation of cell shape / heparin binding / Thrombin signalling through proteinase activated receptors (PARs) / : / positive regulation of cell growth / blood microparticle / G alpha (q) signalling events / cell surface receptor signaling pathway / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / receptor ligand activity / endoplasmic reticulum lumen / signaling receptor binding / serine-type endopeptidase activity / positive regulation of cell population proliferation / calcium ion binding / proteolysis / extracellular space / extracellular exosome / extracellular region / plasma membrane
Similarity search - Function
Hirudin / Proteinase inhibitor I14, hirudin / Thrombin inhibitor hirudin / Hirudin/antistatin / Prothrombin/thrombin / Thrombin light chain / Thrombin light chain domain superfamily / : / Thrombin light chain / Kringle domain ...Hirudin / Proteinase inhibitor I14, hirudin / Thrombin inhibitor hirudin / Hirudin/antistatin / Prothrombin/thrombin / Thrombin light chain / Thrombin light chain domain superfamily / : / Thrombin light chain / Kringle domain / Kringle / Kringle, conserved site / Kringle superfamily / Kringle domain signature. / Kringle domain profile. / Kringle domain / Vitamin K-dependent carboxylation/gamma-carboxyglutamic (GLA) domain / Gamma-carboxyglutamic acid-rich (GLA) domain / Gamma-carboxyglutamic acid-rich (GLA) domain superfamily / Vitamin K-dependent carboxylation domain. / Gla domain profile. / Domain containing Gla (gamma-carboxyglutamate) residues. / Kringle-like fold / 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
Chem-IGN / Prothrombin / Hirudin variant-2
Similarity search - Component
Biological speciesHomo sapiens (human)
Hirudo medicinalis (medicinal leech)
MethodX-RAY DIFFRACTION / OTHER / Resolution: 1.86 Å
AuthorsStubbs, M.T. / Musil, D.
Citation
Journal: J.Mol.Biol. / Year: 2001
Title: Factorising ligand affinity: a combined thermodynamic and crystallographic study of trypsin and thrombin inhibition.
Authors: Dullweber, F. / Stubbs, M.T. / Musil, D. / Sturzebecher, J. / Klebe, G.
#1: Journal: J.Med.Chem. / Year: 1998
Title: Structural and Functional Analyses of Benzamidine-Based Inhibitors in Complex with Trypsin: Implications for the Inhibition of Factor Xa, Tpa, and Urokinase
Authors: Renatus, M. / Bode, W. / Huber, R. / Stuerzebecher, J. / Stubbs, M.T.
#2: Journal: FEBS Lett. / Year: 1995
Title: Crystal Structures of Factor Xa Specific Inhibitors in Complex with Trypsin: Structural Grounds for Inhibition of Factor Xa and Selectivity Against Thrombin
Authors: Stubbs, M.T. / Huber, R. / Bode, W.
#3: Journal: Thromb.Res. / Year: 1993
Title: A Player of Many Parts: The Spotlight Falls on Thrombin'S Structure
Authors: Stubbs, M.T. / Bode, W.
History
DepositionSep 26, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 8, 2002Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2007Group: 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 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_residues / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.auth_asym_id / _atom_site.label_asym_id ..._atom_site.auth_asym_id / _atom_site.label_asym_id / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_conn_angle.ptnr1_PDB_ins_code / _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_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_PDB_ins_code / _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_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _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.pdbx_ptnr2_PDB_ins_code / _struct_conn.pdbx_role / _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.ptnr1_symmetry / _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.ptnr2_symmetry
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 20, 2024Group: Advisory / Data collection ...Advisory / Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / pdbx_unobs_or_zero_occ_residues
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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
L: Prothrombin
H: Prothrombin
I: Hirudin variant-2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,3207
Polymers35,4113
Non-polymers9094
Water4,450247
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)69.619, 71.546, 71.821
Angle α, β, γ (deg.)90.00, 100.12, 90.00
Int Tables number5
Space group name H-MC121

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Components

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Protein/peptide , 2 types, 2 molecules LI

#1: Protein/peptide Prothrombin / ALPHA-THROMBIN / Coagulation factor II


Mass: 4096.534 Da / Num. of mol.: 1 / Fragment: THROMBIN LIGHT CHAIN, Residues 323-363 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P00734, thrombin
#3: Protein/peptide Hirudin variant-2


Mass: 1534.554 Da / Num. of mol.: 1 / Fragment: Residues 60-71 / Source method: isolated from a natural source / Source: (natural) Hirudo medicinalis (medicinal leech) / References: UniProt: P09945

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Protein / Sugars , 2 types, 2 molecules H

#2: Protein Prothrombin / ALPHA-THROMBIN / Coagulation factor II


Mass: 29780.219 Da / Num. of mol.: 1 / Fragment: THROMBIN HEAVY CHAIN, Residues 364-622 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P00734, thrombin
#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE

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Non-polymers , 3 types, 250 molecules

#5: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#6: Chemical ChemComp-IGN / {[(1R)-2-((2S)-2-{[(3-{[AMINO(IMINO)METHYL]AMINO}PROPYL)AMINO]CARBONYL}PIPERIDINYL)-1-(CYCLOHEXYLMETHYL)-2-OXOETHYL]AMINO}ACETIC ACID / INOGATRAN (ASTRA-ZENECA)


Mass: 438.564 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H38N6O4
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 247 / Source method: isolated from a natural source / Formula: H2O

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Details

Compound detailsCHYMOTRYPSIN NUMBERING (RATHER THAN SEQUENTIAL) SYSTEM IS USED, BASED ON THE TOPOLOGICAL ALIGNMENT ...CHYMOTRYPSIN NUMBERING (RATHER THAN SEQUENTIAL) SYSTEM IS USED, BASED ON THE TOPOLOGICAL ALIGNMENT WITH THE STRUCTURE OF CHYMOTRYPSIN (W.BODE ET AL., 1989, EMBO J. 8, 3467-3475).
Has protein modificationY
Nonpolymer detailsHETATM IGN CORRESPONDS TO INHIBITOR 4 OF DULLWEBER ET AL.
Sequence detailsTHROMBIN IS CLEAVED BETWEEN RESIDUES 15 AND 16. CHAIN IDENTIFIER *L* IS USED FOR RESIDUES 1H - 15 ...THROMBIN IS CLEAVED BETWEEN RESIDUES 15 AND 16. CHAIN IDENTIFIER *L* IS USED FOR RESIDUES 1H - 15 AND CHAIN IDENTIFIER *H* IS USED FOR RESIDUES 16 - 247. CHAIN IDENTIFIER *I* IS USED FOR HIRUGEN, THE CARBOXYL TERMINUS OF HIRUDIN, WHICH OCCUPIES THE EXOSITE.

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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: 2.49 Å3/Da / Density % sol: 50.51 %

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Data collection

DiffractionMean temperature: 287 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU300 / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Jun 15, 1999 / 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: 1.86→20 Å / Num. obs: 28635 / % possible obs: 97.7 % / Observed criterion σ(I): 0 / Redundancy: 7.8 % / Rmerge(I) obs: 0.054 / Rsym value: 0.054
Reflection shellHighest resolution: 1.86 Å / Rmerge(I) obs: 0.251 / Rsym value: 0.251 / % possible all: 94.3

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.1refinement
RefinementMethod to determine structure: OTHER / Resolution: 1.86→500 Å / Data cutoff high absF: 10000000 / Data cutoff low absF: 0.001 / σ(F): 0
RfactorNum. reflection% reflection
Rfree0.256 -4.8 %
Rwork0.216 --
obs0.216 28216 96.5 %
Refine analyzeLuzzati d res low obs: 10 Å
Refinement stepCycle: LAST / Resolution: 1.86→500 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2326 0 61 247 2634
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_deg1.79
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
LS refinement shellHighest resolution: 1.86 Å
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2

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