Fgf2

Function

Acts as a ligand for FGFR1, FGFR2, FGFR3 and FGFR4 (By similarity). Also acts as an integrin ligand which is required for FGF2 signaling (By similarity). Binds to integrin ITGAV:ITGB3 (By similarity). Plays an important role in the regulation of cell survival, cell division, cell differentiation and cell migration (By similarity). Functions as a potent mitogen in vitro (By similarity). Can induce angiogenesis (By similarity). Mediates phosphorylation of ERK1/2 and thereby promotes retinal lens fiber differentiation (By similarity).

Post-translational modifications

Phosphorylation at Tyr-81 regulates FGF2 unconventional secretion.

Sequence Similarities

Belongs to the heparin-binding growth factors family.

Cellular localization

• Secreted
• Nucleus
• Exported from cells by an endoplasmic reticulum (ER)/Golgi-independent mechanism (By similarity). Unconventional secretion of FGF2 occurs by direct translocation across the plasma membrane (By similarity). Binding of exogenous FGF2 to FGFR facilitates endocytosis followed by translocation of FGF2 across endosomal membrane into the cytosol (By similarity). Nuclear import from the cytosol requires the classical nuclear import machinery, involving proteins KPNA1 and KPNB1, as well as CEP57 (By similarity).

Alternative names

Fgf-2, Fgf2, Fibroblast growth factor 2, FGF-2, Basic fibroblast growth factor, Heparin-binding growth factor 2, bFGF, HBGF-2

Database links

swissprot:P15655 entrezGene:14173

Other research areas

• Immuno-oncology