| Field | Specification |
|---|---|
| Target | |
| Alternative names | Sperm acrosome membrane-associated protein 3; Cancer/testis antigen 54; CT54; Lysozyme-like acrosomal sperm-specific secretory protein ALLP-17; Lysozyme-like protein 3; Sperm lysozyme-like protein 1; Sperm protein reactive with antisperm antibodies; Sperm protein reactive with ASA; SPACA3; LYC3; LYZL3; SLLP1; SPRASA |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human SPACA3 recombinant protein (Position: E86-F215). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets sperm acrosome membrane-associated protein 3 (gene SPACA3) in human, mouse and rat samples and is validated for Western blot, ICC/IF, flow cytometry and ELISA. The predicted molecular weight is 23.4 kDa, and the supplier reports an observed band at about 40 kDa.
Sperm acrosome membrane-associated protein 3 (SPACA3, also called SLLP1) is a lysozyme-like protein located in the sperm acrosome. It is thought to take part in sperm-egg adhesion and fusion, possibly by binding N-acetylglucosamine on the egg surface, but it lacks detectable bacteriolytic activity.
| Target | Sperm acrosome membrane-associated protein 3 (gene SPACA3; UniProt Q8IXA5, 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 | 23.4 kDa |
| Observed MW | 40 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) |
|---|---|
| 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 293T cells, human Daudi cells, rat C6 cells, mouse NIH/3T3 cells, mouse RAW264.7 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 (ICC/IF): Caco-2 cells.
Samples with a confirmed signal (flow cytometry): Daudi cells.
Immunogen
Recombinant human SPACA3 fragment (Glu86–Phe215), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. Tissue expression noted by UniProt (human): The processed form is expressed in sperm (at protein level). 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.
