| Field | Specification |
|---|---|
| Target | |
| Alternative names | Sphingosine kinase 1; SK 1; SPK 1; Acetyltransferase SPHK1; SPHK1; SK1; SPHK; SPK |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human SPHK1 recombinant protein (Position: R16-H267). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets sphingosine kinase 1 (gene SPHK1) in human, mouse and rat samples and is validated for Western blot, IHC, ICC/IF, flow cytometry and ELISA. The predicted molecular weight is 42.5 kDa, and the supplier reports an observed band at about 45–50 kDa.
Sphingosine kinase 1 (SPHK1) phosphorylates sphingosine to produce sphingosine-1-phosphate, a lipid mediator that acts both inside cells and through S1P receptors on the cell surface. By lowering ceramide and raising S1P, SPHK1 generally favors cell growth and survival, and it is studied in inflammation, vascular biology and cancer.
| Target | Sphingosine kinase 1 (gene SPHK1; UniProt Q9NYA1, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 42.5 kDa |
| Observed MW | 45–50 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human, Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human, Mouse, Rat) |
| Immunocytochemistry / Immunofluorescence | 5 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human HepG2 cells, human MCF-7 cells, human A431 cells, human PC-3 cells, human HeLa cells, human U2OS cells, human Caco-2 cells, rat liver tissue, rat kidney tissue, rat RH35 cells, mouse liver tissue, mouse kidney tissue, mouse Neuro-2a cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human hashintoto's thyroditis tissue, human papillary thyroid carcinoma tissue, human placenta tissue, human gall bladder adenosquamous carcinoma tissue, human gastric cancer tissue, human laryngeal squamous cells carcinoma tissue, human liver cancer tissue, human lung cancer tissue, rat brain tissue, rat lung tissue, mouse brain tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Samples with confirmed staining (ICC/IF): HepG2 cells.
Samples with a confirmed signal (flow cytometry): A431 cells.
Immunogen
Recombinant human SPHK1 fragment (Arg16–His267), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places sphingosine kinase 1 in the cytoplasm, nucleus, cell membrane and endosome membrane. Tissue expression noted by UniProt (human): Widely expressed with highest levels in adult liver, kidney, heart and skeletal muscle. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
Tian Lan et al. (2020) Polydatin attenuates hepatic stellate cell proliferation and liver fibrosis by suppressing sphingosine kinase 1. Biomedicine & Pharmacotherapy. 10.1016/j.biopha.2020.110586
Song Zihan et al. (2025) Sphingosine kinase 1 promotes M2 macrophage infiltration and enhances glioma cell migration via the JAK2/STAT3 pathway. Scientific Reports. 10.1038/s41598-025-88328-2
Shuzhen Hou et al. (2025) The Integration Methodology of Metabolomics and Bioinformatics to Investigate the Mechanism of the Jiawei Erzhi Formula in Treating Postmenopausal Osteoporosis Based on the Kidney-Bone Axis. Separation Science Plus. 10.1002/sscp.70103
