Dissolution of Fibrin Clot (Homo sapiens)

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4, 12, 17143, 9, 18, 24, 257141, 10, 237, 2524, 265, 25, 266, 221910, 232613, 212, 15, 168, 11, 201, 27, 268, 11, 20plasma membranePLAU(179-431) PLAT(36-562) histidine-richglycoprotein:plasminogenSERPINE1 HRG fibrinmultimer,crosslinked:tissueplasminogenactivator(one-chain):plasminogenSERPINF2PLAU(21-431) PLG(20-810)SERPINE1 PAI-2:urokinaseplasminogenactivator(two-chain):uPARPLG(20-810) PLAT(36-310) alpha-2-antiplasmin:plasminSERPINF2 urokinaseplasminogenactivator(one-chain):uPARANXA2 SERPINE1-likeproteinsfibrin multimer,crosslinked:tissueplasminogenactivator(one-chain)N-glycyl-glycosylphosphatidylinositolethanolamine-PLAURANXA2:S100A10tetramerurokinaseplasminogenactivator(two-chain):uPARN-glycyl-glycosylphosphatidylinositolethanolamine-PLAUR PLG(20-810) PLG(20-810) N-glycyl-glycosylphosphatidylinositolethanolamine-PLAUR HRGPLAU(21-431)PLAT(36-562) fibrinmultimer,crosslinked:tissueplasminogenactivator(one-chain):plasminogen activator inhibitor 1PLG(581-810) plasminogen:histidine-rich glycoproteinPLAT(311-562) PLAT(311-562) PAI-1:urokinaseplasminogenactivator(two-chain):uPARSERPINE1PLG(20-580) PLAT(36-562)S100A10 N-glycyl-glycosylphosphatidylinositolethanolamine-PLAUR PLAU(179-431) SERPINE1-likeproteinsPLAT(36-562) PLG(20-810) fibrinmultimer,crosslinked:tissueplasminogenactivator(two-chain):plasminogenPLAU(21-177) PLG(581-810) HRG SERPINB2 PLAU(21-177) fibrin multimer,crosslinkedPLAT(311-562) PLAU(179-431) PlasminZn2+N-glycyl-glycosylphosphatidylinositolethanolamine-PLAUR fibrin digestionproducts (plasmin)SERPINB2PLAT(36-310) fibrin multimer,crosslinked:tissueplasminogenactivator(two-chain)PLAU(21-177) fibrinmultimer,crosslinked:tissueplasminogenactivator(two-chain):plasminogen activator inhibitor 1HRGPLG(20-580) plasminogenactivator inhibitorSERPINE1 PLAT(36-310)


Description

The crosslinked fibrin multimers in a clot are broken down to soluble polypeptides by plasmin, a serine protease. Plasmin can be generated from its inactive precursor plasminogen and recruited to the site of a fibrin clot in two ways, by interaction with tissue plasminogen activator at the surface of a fibrin clot, and by interaction with urokinase plasminogen activator at a cell surface. The first mechanism appears to be the major one responsible for the dissolution of clots within blood vessels. The second, although capable of mediating clot dissolution, may normally play a major role in tissue remodeling, cell migration, and inflammation (Chapman 1997; Lijnen 2001). These other functions of urokinase plasminogen activator will be annotated in future versions of Reactome.
Clot dissolution is regulated in two ways. First, efficient plasmin activation and fibrinolysis occur only in complexes formed at the clot surface or on a cell membrane - proteins free in the blood are inefficient catalysts and are rapidly inactivated. Second, both plasminogen activators and plasmin itself are inactivated by specific serpins, proteins that bind to serine proteases to form stable, enzymatically inactive complexes (Kohler and Grant 2000).
These events are outlined in the drawing: black arrows connect the substrates (inputs) and products (outputs) of individual reactions, and blue lines connect output activated enzymes to the other reactions that they catalyze. Source:Reactome.

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Bibliography

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  24. Wagner OF, de Vries C, Hohmann C, Veerman H, Pannekoek H.; ''Interaction between plasminogen activator inhibitor type 1 (PAI-1) bound to fibrin and either tissue-type plasminogen activator (t-PA) or urokinase-type plasminogen activator (u-PA). Binding of t-PA/PAI-1 complexes to fibrin mediated by both the finger and the kringle-2 domain of t-PA.''; PubMed Europe PMC Scholia
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History

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CompareRevisionActionTimeUserComment
114732view16:21, 25 January 2021ReactomeTeamReactome version 75
113176view11:24, 2 November 2020ReactomeTeamReactome version 74
112404view15:34, 9 October 2020ReactomeTeamReactome version 73
101308view11:19, 1 November 2018ReactomeTeamreactome version 66
100845view20:51, 31 October 2018ReactomeTeamreactome version 65
100386view19:25, 31 October 2018ReactomeTeamreactome version 64
99933view16:09, 31 October 2018ReactomeTeamreactome version 63
99488view14:41, 31 October 2018ReactomeTeamreactome version 62 (2nd attempt)
99140view12:40, 31 October 2018ReactomeTeamreactome version 62
93940view13:46, 16 August 2017ReactomeTeamreactome version 61
93529view11:26, 9 August 2017ReactomeTeamreactome version 61
86628view09:22, 11 July 2016ReactomeTeamreactome version 56
83356view10:57, 18 November 2015ReactomeTeamVersion54
81518view13:03, 21 August 2015ReactomeTeamVersion53
76989view08:28, 17 July 2014ReactomeTeamFixed remaining interactions
76694view12:06, 16 July 2014ReactomeTeamFixed remaining interactions
76020view10:08, 11 June 2014ReactomeTeamRe-fixing comment source
75729view11:20, 10 June 2014ReactomeTeamReactome 48 Update
75079view14:02, 8 May 2014AnweshaFixing comment source for displaying WikiPathways description
74726view08:48, 30 April 2014ReactomeTeamReactome46
68916view17:31, 8 July 2013MaintBotUpdated to 2013 gpml schema
45190view10:02, 7 October 2011MartijnVanIerselOntology Term : 'regulatory pathway' added !
42025view21:51, 4 March 2011MaintBotAutomatic update
39828view05:51, 21 January 2011MaintBotNew pathway

External references

DataNodes

View all...
NameTypeDatabase referenceComment
ANXA2 ProteinP07355 (Uniprot-TrEMBL)
ANXA2:S100A10 tetramerComplexR-HSA-5336141 (Reactome)
HRG ProteinP04196 (Uniprot-TrEMBL)
HRGProteinP04196 (Uniprot-TrEMBL)
N-glycyl-glycosylphosphatidylinositolethanolamine-PLAUR ProteinQ03405 (Uniprot-TrEMBL)
N-glycyl-glycosylphosphatidylinositolethanolamine-PLAURProteinQ03405 (Uniprot-TrEMBL)
PAI-1:urokinase

plasminogen activator

(two-chain):uPAR
ComplexR-HSA-159013 (Reactome)
PAI-2:urokinase

plasminogen activator

(two-chain):uPAR
ComplexR-HSA-159009 (Reactome)
PLAT(311-562) ProteinP00750 (Uniprot-TrEMBL)
PLAT(36-310) ProteinP00750 (Uniprot-TrEMBL)
PLAT(36-562) ProteinP00750 (Uniprot-TrEMBL)
PLAT(36-562)ProteinP00750 (Uniprot-TrEMBL)
PLAU(179-431) ProteinP00749 (Uniprot-TrEMBL)
PLAU(21-177) ProteinP00749 (Uniprot-TrEMBL)
PLAU(21-431) ProteinP00749 (Uniprot-TrEMBL)
PLAU(21-431)ProteinP00749 (Uniprot-TrEMBL)
PLG(20-580) ProteinP00747 (Uniprot-TrEMBL)
PLG(20-810) ProteinP00747 (Uniprot-TrEMBL)
PLG(20-810)ProteinP00747 (Uniprot-TrEMBL)
PLG(581-810) ProteinP00747 (Uniprot-TrEMBL)
PlasminComplexR-HSA-158770 (Reactome)
S100A10 ProteinP60903 (Uniprot-TrEMBL)
SERPINB2 ProteinP05120 (Uniprot-TrEMBL)
SERPINB2ProteinP05120 (Uniprot-TrEMBL)
SERPINE1 ProteinP05121 (Uniprot-TrEMBL)
SERPINE1-like proteinsR-HSA-4127462 (Reactome) This CandidateSet contains sequences identified by William Pearson's analysis of Reactome catalyst entities. Catalyst entity sequences were used to identify analagous sequences that shared overall homology and active site homology. Sequences in this Candidate set were identified in an April 24, 2012 analysis.
SERPINE1-like proteinsR-HSA-4127463 (Reactome) This CandidateSet contains sequences identified by William Pearson's analysis of Reactome catalyst entities. Catalyst entity sequences were used to identify analagous sequences that shared overall homology and active site homology. Sequences in this Candidate set were identified in an April 24, 2012 analysis.
SERPINE1ProteinP05121 (Uniprot-TrEMBL)
SERPINF2 ProteinP08697 (Uniprot-TrEMBL)
SERPINF2ProteinP08697 (Uniprot-TrEMBL)
Zn2+MetaboliteCHEBI:29105 (ChEBI)
alpha-2-antiplasmin:plasminComplexR-HSA-158878 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen activator inhibitor 1
ComplexR-HSA-158791 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen
ComplexR-HSA-158777 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen activator inhibitor 1
ComplexR-HSA-158789 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen
ComplexR-HSA-158786 (Reactome)
fibrin digestion products (plasmin)R-HSA-158774 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
ComplexR-HSA-158764 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(two-chain)
ComplexR-HSA-158745 (Reactome)
fibrin multimer, crosslinkedR-NUL-157771 (Reactome)
histidine-rich glycoprotein:plasminogenComplexR-HSA-158703 (Reactome)
plasminogen activator inhibitorR-HSA-2990857 (Reactome) This CandidateSet contains sequences identified by William Pearson's analysis of Reactome catalyst entities. Catalyst entity sequences were used to identify analagous sequences that shared overall homology and active site homology. Sequences in this Candidate set were identified in an April 24, 2012 analysis.
plasminogen:histidine-rich glycoproteinComplexR-HSA-158961 (Reactome)
urokinase

plasminogen activator

(one-chain):uPAR
ComplexR-HSA-158926 (Reactome)
urokinase

plasminogen activator

(two-chain):uPAR
ComplexR-HSA-158969 (Reactome)

Annotated Interactions

View all...
SourceTargetTypeDatabase referenceComment
ANXA2:S100A10 tetramerArrowR-HSA-158750 (Reactome)
HRGArrowR-HSA-158721 (Reactome)
HRGArrowR-HSA-158925 (Reactome)
HRGArrowR-HSA-158982 (Reactome)
HRGR-HSA-158722 (Reactome)
HRGR-HSA-158941 (Reactome)
N-glycyl-glycosylphosphatidylinositolethanolamine-PLAURR-HSA-158959 (Reactome)
PAI-1:urokinase

plasminogen activator

(two-chain):uPAR
ArrowR-HSA-159005 (Reactome)
PAI-2:urokinase

plasminogen activator

(two-chain):uPAR
ArrowR-HSA-159001 (Reactome)
PLAT(36-562)R-HSA-158781 (Reactome)
PLAU(21-431)R-HSA-158959 (Reactome)
PLG(20-810)ArrowR-HSA-158721 (Reactome)
PLG(20-810)R-HSA-158722 (Reactome)
PLG(20-810)R-HSA-158756 (Reactome)
PLG(20-810)R-HSA-158784 (Reactome)
PLG(20-810)R-HSA-158941 (Reactome)
PlasminArrowR-HSA-158744 (Reactome)
PlasminArrowR-HSA-158750 (Reactome)
PlasminArrowR-HSA-158925 (Reactome)
PlasminArrowR-HSA-158982 (Reactome)
PlasminR-HSA-158893 (Reactome)
Plasminmim-catalysisR-HSA-158747 (Reactome)
Plasminmim-catalysisR-HSA-158766 (Reactome)
Plasminmim-catalysisR-HSA-158942 (Reactome)
R-HSA-158721 (Reactome) Plasminogen reversibly binds histidine-rich glycoprotein (HRG). The resulting complex interacts poorly with fibrin, suggesting that HRG might have an anti-fibrinolytic (clot-stabilizing) effect in vivo (Lijnen et al. 1980). Consistent with this suggestion, individuals with chronically reduced plasma HRG concentrations are susceptible to thrombosis (Shigekiyo et al. 1998).
R-HSA-158722 (Reactome) Plasminogen reversibly binds histidine-rich glycoprotein (HRG). The resulting complex interacts poorly with fibrin, suggesting that HRG might have an anti-fibrinolytic (clot-stabilizing) effect in vivo (Lijnen et al. 1980). Consistent with this suggestion, individuals with chronically reduced plasma HRG concentrations are susceptible to thrombosis (Shigekiyo et al. 1998).
R-HSA-158744 (Reactome) At the beginning of this reaction, 1 molecule of 'fibrin multimer, crosslinked:tissue plasminogen activator (two-chain):plasminogen' is present. At the end of this reaction, 1 molecule of 'plasmin', and 1 molecule of 'fibrin multimer, crosslinked:tissue plasminogen activator (two-chain)' are present.

This reaction takes place in the 'extracellular region' and is mediated by the 'plasminogen activator activity' of 'fibrin multimer, crosslinked:tissue plasminogen activator (two-chain):plasminogen'.

R-HSA-158747 (Reactome) Once plasmin has been activated, in the initial stage of the fibrinolysis process, it can catalyze the conversion of fibrin-bound tissue plasminogen activator (one-chain) to its more active two-chain form, increasing the rate at which additional plasminogen molecules can be activated.
R-HSA-158750 (Reactome) Plasminogen bound to fibrin is cleaved and activated by tissue plasminogen activator also bound to the fibrin. The association of both plasminogen and tissue plasminogen activator with a fibrin clot juxtaposes the two molecules, facilitating their interaction (Hoylaerts et al. 1982). Early studies suggested that tissue plasminogen activator itself might require activation (conversion to its two-chain form) before it could catalyze this reaction (e.g., Higgins and Vehar 1987). More recent work (Boose et al. 1989) indicates that the single-chain form of the molecule is catalytically active, although cleavage increases its activity and may thus serve to accelerate the later stages of fibrinolysis.

Annexin A2 (ANXA2) is a multicompartmental, multifunctional protein that forms a heterotetramer with its endothelial cell-surface binding partner protein S100-A10 (S100A10) (Rety et al. 1999). The tetramer is able to positively modulate tissue plasminogen activator-dependent activation of the fibrinolytic protease, plasmin from its plasminogen precursor (Luo et al. 2013, Hedhli et al. 2012).
R-HSA-158756 (Reactome) At the beginning of this reaction, 1 molecule of 'plasminogen', and 1 molecule of 'fibrin multimer, crosslinked:tissue plasminogen activator (two-chain)' are present. At the end of this reaction, 1 molecule of 'fibrin multimer, crosslinked:tissue plasminogen activator (two-chain):plasminogen' is present.

This reaction takes place in the 'extracellular region'.

R-HSA-158766 (Reactome) Plasmin, generated at the surfaces of the fibrin clot by tissue plasminogen activator or at the surfaces of cells by urokinase plasminogen activator, catalyzes the hydrolysis of fibrin to soluble fragments (Chapman 1997).
R-HSA-158781 (Reactome) The first step in the dissolution of a fibrin clot is the association of the one-chain form of tissue plasminogen activator with fibrin.
R-HSA-158784 (Reactome) Plasminogen associates with tissue plasminogen activator bound to fibrin.
R-HSA-158795 (Reactome) Plasminogen activator inhibitor 1, a serpin, binds to fibrin-associated tissue plasminogen activator. The resulting stable complex remains associated with fibrin but cannot activate plasminogen (Wagner et al. 1989). The importance of this step in the regulation of clot dissolution in vivo is indicated by the occurence of thrombosis in individuals with abnormally little tissue plasminogen activator or abnormally much plasminogen activator inhibitor (Juhan-Vague et al. 1987).
R-HSA-158800 (Reactome) Plasminogen activator inhibitor 1, a serpin, binds to fibrin-associated tissue plasminogen activator. The resulting stable complex remains associated with fibrin but cannot activate plasminogen (Wagner et al. 1989). The importance of this step in the regulation of clot dissolution in vivo is indicated by the occurence of thrombosis in individuals with abnormally little tissue plasminogen activator or abnormally much plasminogen activator inhibitor (Juhan-Vague et al. 1987).
R-HSA-158893 (Reactome) Plasmin binds the serpin alpha-2-antiplasmin, forming a stable and catalytically inactive complex. While several serpin proteins bind and inactivate plasmin in vitro, alpha-2-antiplasmin appears to be the only one with substantial plasmin-neutralizing activity in vivo (Moroi and Aoki 1976; Lijnen et al. 1987).
R-HSA-158925 (Reactome) Plasminogen, tethered to the cell surface by its association with histidine-rich glycoprotein, is rapidly cleaved and activated to plasmin by the action of urokinase plasminogen activator(two-chain form) bound to uPAR, its cell-surface receptor. The association of both substrate and enzyme with the cell surface is necessary for the reaction to proceed efficiently (Ellis et al. 1989, 1991).
R-HSA-158941 (Reactome) Extracellular plasminogen binds with high affinity to histidine-rich glycoprotein on the plasma membrane. Binding requires Zn++ in concentrations higher than those found in normal plasma, but that can be generated, e.g., by platelet activation (Jones et al. 2004).
R-HSA-158942 (Reactome) The small amount of plasmin generated by the activity of the one-chain form of urokinase plasminogen activator in turn cleaves urokinase plasminogen activator, converting it to its substantially more active two-chain form (Cubellis et al. 1986; Lijnen et al. 1991).
R-HSA-158959 (Reactome) The uncleaved (one-chain) form of urokinase plasminogen activator associates with urokinase plasminogen activator receptor (uPAR), forming a complex at the cell surface (Cubellis et al. 1986). The complex is anchored to the outer face of the plasma membrane by a glycophosphatidylinositol moiety at the carboxy terminus of uPAR (Behrendt et al. 1990; Ploug et al. 1991).
R-HSA-158982 (Reactome) Plasminogen, tethered to the cell surface by its association with histidine-rich glycoprotein, is cleaved and activated to plasmin by the action of urokinase plasminogen activator bound to uPAR, its cell-surface receptor. The association of both substrate and enzyme with the cell surface is necessary for the reaction to proceed efficiently (Ellis et al. 1991). While the one-chain form of urokinase plasminogen activator is lower than that of the two-chain form, it is still sufficient to initiate the process of plasmin activation (Ellis et al. 1989; Lijnen et al. 1986).
R-HSA-159001 (Reactome) Activated (two-chain) urokinase plasminogen activator binds plasminogen activator inhibitor 2, a serpin, to form a stable, inactive complex that remains associated with uPAR on the plasma membrane (Estreicher et al. 1990; Kruithof et al. 1986).
R-HSA-159005 (Reactome) Activated (two-chain) urokinase plasminogen activator binds plasminogen activator inhibitor 1, a serpin, to form a stable, inactive complex that remains associated with uPAR on the plasma membrane (Cubellis et al. 1989).
SERPINB2R-HSA-159001 (Reactome)
SERPINE1-like proteinsmim-catalysisR-HSA-158795 (Reactome)
SERPINE1-like proteinsmim-catalysisR-HSA-158800 (Reactome)
SERPINE1-like proteinsmim-catalysisR-HSA-159005 (Reactome)
SERPINE1R-HSA-158795 (Reactome)
SERPINE1R-HSA-158800 (Reactome)
SERPINE1R-HSA-159005 (Reactome)
SERPINF2R-HSA-158893 (Reactome)
SERPINF2mim-catalysisR-HSA-158893 (Reactome)
Zn2+ArrowR-HSA-158941 (Reactome)
alpha-2-antiplasmin:plasminArrowR-HSA-158893 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen activator inhibitor 1
ArrowR-HSA-158795 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen
ArrowR-HSA-158784 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen
R-HSA-158750 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(one-chain):plasminogen
mim-catalysisR-HSA-158750 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen activator inhibitor 1
ArrowR-HSA-158800 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen
ArrowR-HSA-158756 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen
R-HSA-158744 (Reactome)
fibrin

multimer, crosslinked:tissue plasminogen activator

(two-chain):plasminogen
mim-catalysisR-HSA-158744 (Reactome)
fibrin digestion products (plasmin)ArrowR-HSA-158766 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
ArrowR-HSA-158750 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
ArrowR-HSA-158781 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
R-HSA-158747 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
R-HSA-158784 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(one-chain)
R-HSA-158795 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(two-chain)
ArrowR-HSA-158744 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(two-chain)
ArrowR-HSA-158747 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(two-chain)
R-HSA-158756 (Reactome)
fibrin multimer,

crosslinked:tissue plasminogen activator

(two-chain)
R-HSA-158800 (Reactome)
fibrin multimer, crosslinkedR-HSA-158766 (Reactome)
fibrin multimer, crosslinkedR-HSA-158781 (Reactome)
histidine-rich glycoprotein:plasminogenArrowR-HSA-158722 (Reactome)
histidine-rich glycoprotein:plasminogenR-HSA-158721 (Reactome)
plasminogen activator inhibitormim-catalysisR-HSA-159001 (Reactome)
plasminogen:histidine-rich glycoproteinArrowR-HSA-158941 (Reactome)
plasminogen:histidine-rich glycoproteinR-HSA-158925 (Reactome)
plasminogen:histidine-rich glycoproteinR-HSA-158982 (Reactome)
urokinase

plasminogen activator

(one-chain):uPAR
ArrowR-HSA-158959 (Reactome)
urokinase

plasminogen activator

(one-chain):uPAR
R-HSA-158942 (Reactome)
urokinase

plasminogen activator

(one-chain):uPAR
mim-catalysisR-HSA-158982 (Reactome)
urokinase

plasminogen activator

(two-chain):uPAR
ArrowR-HSA-158942 (Reactome)
urokinase

plasminogen activator

(two-chain):uPAR
R-HSA-159001 (Reactome)
urokinase

plasminogen activator

(two-chain):uPAR
R-HSA-159005 (Reactome)
urokinase

plasminogen activator

(two-chain):uPAR
mim-catalysisR-HSA-158925 (Reactome)
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