S100a4
Function
Calcium-binding protein that plays a role in various cellular processes including motility, angiogenesis, cell differentiation, apoptosis, and autophagy (PubMed:20519440). Increases cell motility and invasiveness by interacting with non-muscle myosin heavy chain (NMMHC) IIA/MYH9 (PubMed:8051043). Mechanistically, promotes filament depolymerization and increases the amount of soluble myosin-IIA, resulting in the formation of stable protrusions facilitating chemotaxis (PubMed:8051043). Modulates also the pro-apoptotic function of TP53 by binding to its C-terminal transactivation domain within the nucleus and reducing its protein levels (By similarity). Within the extracellular space, stimulates cytokine production including granulocyte colony-stimulating factor and CCL24 from T-lymphocytes (PubMed:20103644). In addition, stimulates T-lymphocyte chemotaxis by acting as a chemoattractant complex with PGLYRP1 that promotes lymphocyte migration via CCR5 and CXCR3 receptors (By similarity).
Sequence Similarities
Belongs to the S-100 family.
Tissue Specificity
Specifically expressed in different metastatic cells.
Cellular localization
- Secreted
- Nucleus
- Cytoplasm
Alternative names
Capl, Mts1, S100a4, Protein S100-A4, Metastasin, Metastatic cell protein, PEL98, Placental calcium-binding protein, Protein 18A2, Protein Mts1, S100 calcium-binding protein A4