| Post Translational Modifications | Phosphorylated.probably by casein kinase II. Phosphorylation alters the affinity of the protein for IGFs. In amniotic fluid, the unmodified protein is the most abundant form, while mono-, bi-, tri- and tetraphosphorylated forms are present in decreasing amounts. The phosphorylation state may influence the propensity to proteolysis. |
| Function | Multifunctional protein that plays a critical role in regulating the availability of IGFs such as IGF1 and IGF2 to their receptors and thereby regulates IGF-mediated cellular processes including cell migration, proliferation, differentiation or apoptosis in a cell-type specific manner. Also plays a positive role in cell migration by interacting with integrin ITGA5:ITGB1 through its RGD motif. Mechanistically, binding to integrins leads to activation of focal adhesion kinase/PTK2 and stimulation of the mitogen-activated protein kinase (MAPK) pathway. Regulates cardiomyocyte apoptosis by suppressing HIF-1alpha/HIF1A ubiquitination and subsequent degradation. |
| Protein Name | Insulin-Like Growth Factor-Binding Protein 1Ibp-1Igf-Binding Protein 1Igfbp-1Placental Protein 12Pp12 |
| Database Links | Reactome: R-HSA-380994Reactome: R-HSA-381426Reactome: R-HSA-8957275Reactome: R-HSA-9615017 |
| Cellular Localisation | Secreted |
| Alternative Protein Names | Insulin-Like Growth Factor-Binding Protein 1 proteinIbp-1 proteinIgf-Binding Protein 1 proteinIgfbp-1 proteinPlacental Protein 12 proteinPp12 proteinIGFBP1 proteinIBP1 protein |
Information sourced from Uniprot.org
