| Field | Specification |
|---|---|
| Mfr No | |
| Clonality | |
| Host | |
| Immunogen | A synthetic peptide corresponding to a sequence in the middle region of human CD42a/GP9 was used as the immunogen for the Glycoprotein 9 antibody. |
| Isotype | |
| Product Type | |
| Purity | |
| Reactivity | |
| Storage | |
| Target | |
| UniProt # |
Overview
Glycoprotein 9 Antibody / Gp9 / CD42a is a anti-GP9 Rabbit antibody Polyclonal (rabbit origin) supplied in Lyophilized format. Recommended for workflows such as Western blot (WB), Immunohistochemistry (IHC) with listed reactivity in Human, Mouse. Reported localization: Cell membrane, cytoplasm, nucleus.
Key elements and design rationale
- Target: GP9
- Antibody details: Rabbit, Polyclonal (rabbit origin), isotype Rabbit IgG
- Format: Lyophilized
- Applications (as listed): WB, IHC
Biological background
The protein is encoded by the GP9 gene on human chromosome 3q21.3. Glycoprotein 9 is approximately 177 amino acids long and contains a single leucine-rich repeat flanked by cysteine-rich regions, which maintain receptor conformation and complex assembly. It is expressed exclusively on platelet membranes and megakaryocytes, where it associates non-covalently with GPIbalpha and GPIbbeta to form the functional receptor complex for von Willebrand factor binding.
The Glycoprotein 9 antibody detects a 25 kilodalton band by western blot and shows strong membrane staining in platelets. The GPIb-IX-V complex mediates platelet tethering to exposed subendothelial matrix at sites of vascular injury, initiating platelet activation and aggregation. Defects or mutations in Glycoprotein 9 lead to Bernard-Soulier syndrome, characterized by thrombocytopenia, giant platelets, and impaired adhesion.
Beyond hemostasis, the GPIb-IX-V complex participates in inflammatory and immune signaling. Platelet Glycoprotein 9 contributes to leukocyte recruitment, vascular permeability, and thromboinflammatory responses. Overexpression or dysregulation has been associated with thrombosis and cardiovascular disease, making it an important target for antithrombotic therapy.
Because of its role in platelet adhesion and vascular integrity, Glycoprotein 9 is a critical biomarker for platelet-related disorders.
Research relevance and current trends
- Connecting protein-level changes to phenotype using orthogonal readouts (genetic perturbation, transcriptomics, imaging).
- Considering isoforms and post-translational regulation when interpreting protein-level changes.
- Comparing results across species and model systems with matched controls.
Common research applications
- Western blotting: compare relative abundance and activation-state changes across conditions.
- Immunohistochemistry: map target signal in tissue context and compare regions/phenotypes.
Interpret changes in signal alongside appropriate controls and, when relevant, in parallel with total-protein or pathway readouts.
Notes for experimental interpretation
- Signal can reflect expression level, isoform composition, and post-translational state; interpret results in the context of your model system and stimuli.
- Species differences and sample matrices can influence epitope recognition; prioritize matched controls and orthogonal confirmation when feasible.
Antibody notes: Polyclonal antibodies recognize multiple epitopes, which can broaden the epitope footprint and may increase sensitivity in some contexts.
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.
