Follistatin-related protein (FSTL1), human
CAS: 158709-61-6
Category: Peptides
| Purity | Research Grade ≥90% purity (SDS-PAGE/HPLC); High-Purity Recombinant Grade ≥95%; Cell Biology Researc |
| Molecular Formula | C35H54N10O12S2 (approximate protein subunit composition) |
| Molecular Weight | Approximately 35-40 kDa (recombinant protein; mole |
| Appearance | White to off-white lyophilized powder; recombinant human protein supplied as freeze-dried material. |
| Packaging | 10 µg, 50 µg, 100 µg, 1 mg lyophilized vials; bulk quantities supplied in sterile glass vials with protective packaging and cold-chain shipment. |
| Testing Indicators | Appearance — Visual inspection; Protein concentration — UV absorbance at 280 nm (A280) or BCA assay; Purity — SDS-PAGE analysis; Molecular weight confirmation — SDS-PAGE and LC-MS; Identity — Western blot using anti-FSTL1 antibody, ELISA, or peptide mapping; Aggregation analysis — SEC-HPLC; Endotoxin level — LAL assay; Biological activity — cell-based assay or BMP/TGF-β pathway activity assay. |
| Storage Notes | Store at -20°C or -80°C for long-term storage. Avoid repeated freeze-thaw cycles. Reconstituted protein should be aliquoted and stored under recommended conditions. Protect from moisture, heat, and prolonged exposure to light. Maintain sterile handling conditions during use. |
| Lead Time | 10 days |
Follistatin-related protein (FSTL1), also known as TSC-36 gene product or FRP protein, is a secreted extracellular matrix-associated glycoprotein belonging to the follistatin-like protein family. It is mainly used as a research reagent in molecular biology, cell signaling studies, inflammation research, cardiovascular biology, tissue regeneration, and studies of BMP/TGF-β signaling pathways. It is not intended for therapeutic or diagnostic use unless specifically approved.