Profilin-1 (P62963)

Uniprot ID P62963
Protein Name Profilin-1
Gene Name Pfn1
Species Rattus norvegicus (Rat)
Signal peptide(a) N Secretome P(b)
Function Binds to actin and affects the structure of the cytoskeleton. At high concentrations, profilin prevents the polymerization of actin, whereas it enhances it at low concentrations. By binding to PIP2, it inhibits the formation of IP3 and DG. Inhibits androgen receptor (AR) and HTT aggregation and binding of G-actin is essential for its inhibition of AR (By similarity). .
GO - Molecular function
  • actin binding : ISO:RGD
  • actin monomer binding : ISO:RGD
  • adenyl-nucleotide exchange factor activity : ISO:RGD
  • phosphatidylinositol-4,5-bisphosphate binding : IDA:RGD
  • proline-rich region binding : ISO:RGD
  • Rho GTPase binding : ISO:RGD
  • signaling receptor binding : IDA:RGD
GO - Biological process
  • actin polymerization or depolymerization : TAS:RGD
  • cellular response to growth factor stimulus : IEP:RGD
  • modification of postsynaptic actin cytoskeleton : ISO:RGD
  • negative regulation of actin filament bundle assembly : ISO:RGD
  • negative regulation of actin filament polymerization : ISO:RGD
  • negative regulation of stress fiber assembly : ISO:RGD
  • neural tube closure : ISO:RGD
  • positive regulation of actin filament bundle assembly : IBA:GO_Central
  • positive regulation of actin filament polymerization : ISO:RGD
  • positive regulation of ATPase activity : ISO:RGD
  • positive regulation of DNA metabolic process : IDA:RGD
  • positive regulation of epithelial cell migration : ISO:RGD
  • positive regulation of ruffle assembly : ISO:RGD
  • positive regulation of stress fiber assembly : IMP:RGD
  • positive regulation of transcription by RNA polymerase II : IDA:RGD
  • positive regulation of viral transcription : IMP:RGD
  • protein stabilization : ISO:RGD
  • regulation of actin filament polymerization : IBA:GO_Central
  • regulation of transcription by RNA polymerase II : ISO:RGD
  • response to organic substance : IEP:RGD
  • synapse maturation : ISO:RGD
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(a) The Signal peptide D-score cutoff for "YES"(having signal peptide) is 0.45.
(b) Non-classically secreted proteins should obtain an NN-score(Neural Networks score) exceeding the normal threshold of 0.5, but not at the same time be predicted to contain a signal peptide.