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Details on Person UniProt:P05121 SERPINE1

Class:IdReferenceGeneProduct:61272
_chainChangeLogsignal peptide:1-23 added on Fri February 6 2015;chain:24-402 added on Fri February 6 2015
_displayNameUniProt:P05121 SERPINE1
_timestamp2025-05-21 21:20:11
chainsignal peptide:1-23
chain:24-402
checksumA2E181ED28DD6082
commentFUNCTION Serine protease inhibitor. Inhibits TMPRSS7 (PubMed:15853774). Is a primary inhibitor of tissue-type plasminogen activator (PLAT) and urokinase-type plasminogen activator (PLAU). As PLAT inhibitor, it is required for fibrinolysis down-regulation and is responsible for the controlled degradation of blood clots (PubMed:17912461, PubMed:8481516, PubMed:9207454, PubMed:21925150). As PLAU inhibitor, it is involved in the regulation of cell adhesion and spreading (PubMed:9175705). Acts as a regulator of cell migration, independently of its role as protease inhibitor (PubMed:15001579, PubMed:9168821). It is required for stimulation of keratinocyte migration during cutaneous injury repair (PubMed:18386027). It is involved in cellular and replicative senescence (PubMed:16862142). Plays a role in alveolar type 2 cells senescence in the lung (By similarity). Is involved in the regulation of cementogenic differentiation of periodontal ligament stem cells, and regulates odontoblast differentiation and dentin formation during odontogenesis (PubMed:25808697, PubMed:27046084).SUBUNIT Forms a heterodimer with TMPRSS7 (PubMed:15853774). Interacts with VTN (PubMed:7522053). Binds LRP1B; binding is followed by internalization and degradation (PubMed:11384978). Interacts with PPP1CB (PubMed:28296156). In complex with PLAU/uPA, interacts with PLAUR/uPAR (PubMed:15053742). Interacts with SORL1 and LRP1, either alone or in complex with PLAU; these interactions are abolished in the presence of LRPAP1/RAP (PubMed:15053742). The ternary complex composed of PLAUR-PLAU-PAI1 also interacts with SORL1 (PubMed:15053742). Interacts with PLAT/tPA (PubMed:21925150). Also interacts with SORL1, when complexed to PLAT/tPA (PubMed:15053742).INTERACTION Expressed in endothelial cells (PubMed:2430793, PubMed:3097076). Found in plasma, platelets, and hepatoma and fibrosarcoma cells.INDUCTION Up-regulated by coagulation factor Xa (F10) in atrial tissues (PubMed:24041930). Up-regulated in atrial tissues by rapid pacing resembling atrial fibrillation (PubMed:24041930).PTM Inactivated by proteolytic attack of the urokinase-type (u-PA) and the tissue-type (TPA), cleaving the 369-Arg-|-Met-370 bond.DISEASE The disease is caused by variants affecting the gene represented in this entry. A rare PAI-1D mutation resulting in a frameshift and protein truncation has been found in an Old Order Amish community. Homozygous mutation carriers suffer from episodes of major hemorrhage, while heterozygous carriers do not manifest abnormal bleeding (PubMed:9207454). Heterozygosity for the mutation is associated with longer leukocyte telomere length, lower fasting insulin levels, lower prevalence of diabetes mellitus, and a longer life span (PubMed:29152572).SIMILARITY Belongs to the serpin family.ONLINE INFORMATION Plasminogen activator inhibitor-1 entryONLINE INFORMATION Giving in to time - Issue 203 of May 2018
descriptionrecommendedName: Plasminogen activator inhibitor 1 shortName: PAI shortName: PAI-1 alternativeName: Endothelial plasminogen activator inhibitor alternativeName: Serpin E1
geneNameSERPINE1
PAI1
PLANH1
identifierP05121
isSequenceChangedFALSE
keyword3D-structure
Alternative splicing
Direct protein sequencing
Glycoprotein
Protease inhibitor
Proteomics identification
Reference proteome
Secreted
Serine protease inhibitor
Signal
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9948485] Weiser, Joel, 2025-05-21
nameSERPINE1
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:2106585] ENSEMBL:ENSG00000106366 SERPINE1 [Homo sapiens]
secondaryIdentifierPAI1_HUMAN
B7Z4S0
F8WD53
sequenceLength402
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:8967956] UniProt:P05121-1 SERPINE1 [Homo sapiens]
[ReferenceIsoform:8967957] UniProt:P05121-2 SERPINE1 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:114649] SERPINE1 [platelet alpha granule lumen] [Homo sapiens]
[EntityWithAccessionedSequence:158797] SERPINE1 [extracellular region] [Homo sapiens]
[EntityWithAccessionedSequence:158922] SERPINE1 [plasma membrane] [Homo sapiens]
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