Anti-HNF-4-alpha Antibody Picoband® (monoclonal, 6C8E9)

Overview

Anti-HNF-4-alpha Antibody Picoband® (monoclonal, 6C8E9) is an antibody reagent for detection of HNF4A (CD46 molecule, complement regulatory protein). Researchers commonly use anti-HNF4A antibodies to measure relative expression and localization across biological samples, with assay selection guided by the listed applications (WB, IHC, Flow, ELISA).

Boster Bio Anti-HNF-4-alpha Antibody Picoband® (monoclonal, 6C8E9) catalog # M00389-2. Tested in IHC, WB applications. This antibody reacts with Human, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.

Key elements and design rationale

• Target: HNF4A — Membrane cofactor protein (CD46 molecule, complement regulatory protein). Alternative names: AHUS2 antibody; Antigen defined by monoclonal antibody; TRA 2 10 antibody; Antigen identified by monoclonal antibody; TRA 2 10 antibody; CD46 antibody; CD46 antigen antibody; CD46 antigen complement regulatory protein antibody; CD46 molecule antibody; CD46 molecule complement regulatory protein antibody; Complement membrane cofactor protein antibody; MCP antibody; MCP_HUMAN antibody; Measles virus receptor antibody; membrane cofactor protein (CD46, trophoblast-lymphocyte cross-reactive antigen) antibody; Membrane cofactor protein antibody; MGC26544 antibody;MIC10 antibody; TLX antibody; TRA2.10 antibody; Trophoblast leucocyte common antigen antibody; Trophoblast leukocyte common antigen antibody; Trophoblast lymphocyte cross reactive antigen antibody
• Antibody format: Monoclonal; clone 6C8E9; Mouse IgG2a
• Species context: Host: Mouse, Reactivity: Human,Rat
• Purification: Immunogen affinity purified.
• Immunogen: E.coli-derived human HNF-4-alpha recombinant protein (Position: Q164-I474). Human HNF-4-alpha shares 95% and 96% amino acid (aa) sequence identity with mouse and rat HNF-4-alpha, respectively.
• Molecular weight context: observed 53 kDa (reported)
• Provided application(s): WB, IHC, Flow, ELISA

These attributes help contextualize how the antibody is commonly selected (host/clonality/isotype/label) and how signals are interpreted across sample types and assay formats.

Biological background

Function: Acts as a cofactor for complement factor I,a serine protease which protects autologous cells against complement-mediated injury by cleaving C3b and C4b deposited on host tissue. May be involved in the fusion of the spermatozoa with the oocyte during fertilization. Also acts as a costimulatory factor for T-cells which induces the differentiation of CD4+ into T-regulatory 1 cells. T-regulatory 1 cells suppress immune responses by secreting interleukin-10,and therefore are thought to prevent autoimmunity.

Cellular localization: Secreted.

Tissue details: Expressed by all cells except erythrocytes.

Background: Hepatocyte nuclear factor 4 alpha (HNF4A), also known as NR2A1, is a nuclear receptor that in humans is encoded by the HNF4A gene. It is mapped to 20q13.12. HNF4A is a nuclear transcription factor that binds DNA as a homodimer. The encoded protein controls the expression of several genes, including hepatocyte nuclear factor 1 alpha, a transcription factor which regulates the expression of several hepatic genes. This gene plays a role in development of the liver, kidney, and intestines. HNF4A is required for the PXR and CAR-mediated transcriptional activation of CYP3A4. This gene also plays a pivotal role in the expression and synthesis of SHBG, an important glycoprotein made primarily in the liver, which in addition to lowering insulin-resistance also serves in reducing levels of free Oestrogen as-well as prolonging the half-life of Testosterone.

Cross reactivity: No cross-reactivity with other proteins.

Research relevance and current trends

• Quantitative and spatial profiling: expression patterns are increasingly studied across cell states using multiplex imaging and omics-informed validation.
• Isoforms and post-translational modifications: researchers often evaluate how isoform composition and PTMs can shift apparent molecular weight or localization.
• Context-aware interpretation: comparative studies commonly include perturbations (stimulation, inhibition, genetic models) to relate target changes to pathway behavior.

Common research applications

• Western blot (WB): compare relative target abundance and apparent size shifts (e.g., isoforms/PTMs) across conditions.
• Immunohistochemistry (IHC): assess distribution across tissue compartments and compare staining patterns between groups.
• Flow cytometry: quantify target-positive populations and compare shifts after stimulation or differentiation.

Across these uses, researchers typically interpret changes in signal as relative differences between matched sample groups, considering sample preparation and biological context.

Notes for experimental interpretation

• Apparent molecular weight can vary due to isoforms, proteolysis, glycosylation, phosphorylation, and sample preparation differences.
• Species reactivity and epitope conservation can influence observed signal patterns, especially in cross-species studies.
• Control concepts: include appropriate negative controls (e.g., isotype controls where relevant) and, when feasible, genetic or orthogonal controls (KO/KD, peptide competition, or independent assays) to support interpretation.

For antibody reagents, monoclonal antibodies are often chosen for epitope consistency across lots, while polyclonals may recognize multiple epitopes and can show different background characteristics depending on context.

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.