| Field | Specification |
|---|---|
| Target | |
| Alternative names | Sepiapterin reductase; SPR; SPR |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E. coli-derived human SPR recombinant protein (Position: V36-K261). |
| Molecular weight | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody detects sepiapterin reductase (gene SPR) in human and mouse samples and is validated for ELISA and Western blot. The predicted molecular weight is 28.0 kDa, and the supplier reports an observed band at about 28 kDa.
Sepiapterin reductase (SPR) is an NADPH-dependent enzyme that catalyzes the final reduction steps in the synthesis of tetrahydrobiopterin (BH4). BH4 is an essential cofactor for aromatic amino acid hydroxylases and nitric oxide synthases, so SPR is studied in neurotransmitter synthesis and BH4 metabolism.
| Target | Sepiapterin reductase (gene SPR; UniProt P35270, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3 |
| Calculated MW | 28.0 kDa |
| Observed MW | 28 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 | 0.1–0.5 µg/mL |
|---|---|
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human HepG2 cells, mouse HEPA1–6 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, 50 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 1:10000, ECL detection.
Immunogen
Recombinant human SPR fragment (Val36–Lys261), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human and mouse. UniProt places sepiapterin reductase in the cytoplasm. 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.
Li-Xia Hu et al. (2023) Alterations in the endometrium of rats, rabbits, and Macaca mulatta that received an implantation of copper/low-density polyethylene nanocomposite. International Journal of Nanomedicine. 10.2147/IJN.S56756
