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| Alternative Names | Calnexin, CALX_HUMAN, CANX, CNX, FLJ26570, IP90, p88, p90, Histocompatibility complex class I antigen binding protein p88, Major histocompatibility complex class I antigen-binding protein p88 |
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| Host | |
| Immunogen | Dog Calnexin C-terminal synthetic peptide conjugated to KLH. Identical to human, mouse and rat calnexin sequences over these residues. |
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Calnexin is a ~90 kDa integral membrane protein of the endoplasmic reticulum (ER), also known as IP90, p88, or p90. Structurally, it comprises a large N-terminal calcium-binding luminal domain (~50 kDa), a single transmembrane helix, and a short, acidic cytoplasmic tail (CT). Unlike many ER-resident proteins that rely on a C-terminal KDEL motif for retention, Calnexin is retained in the ER via positively charged residues in its cytosolic tail.
Functionally, Calnexin is a central component of the ER quality control system. It acts as a molecular chaperone, facilitating the proper folding and assembly of nascent glycoproteins. In concert with calreticulin, Calnexin binds to monoglucosylated N-linked glycans on folding intermediates, ensuring fidelity in glycoprotein maturation. It also interacts with key immune molecules, including MHC class I heavy chains, T cell receptor subunits, and B cell immunoglobulins.
In neuroscience, Calnexin-CT is gaining attention for its role in neurodegenerative disease. ER stress and impaired protein folding are hallmarks of disorders such as Alzheimer’s, Parkinson’s, and ALS. Dysregulation of Calnexin function can exacerbate proteostasis imbalance, leading to accumulation of misfolded proteins and neuronal dysfunction.
Given its dual role in protein folding and ER homeostasis, Calnexin—particularly its cytoplasmic tail—represents a promising target for therapeutic strategies aimed at restoring proteostasis in neurodegenerative diseases.
A 1:2000 dilution of SPC-182 was sufficient for detection of Calnexin in 10 µg of HeLa cell lysate by ECL immunoblot analysis.
Cite this product varies by variant:
- SPC-182B — Size: 200 ug: Calnexin-CT Antibody (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B, RRID: AB_2068990)
- SPC-182B-A390 — Size: 200 ug: Calnexin-CT Antibody: ATTO 390 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-A390, RRID: AB_2703942)
- SPC-182B-A488 — Size: 200 ug: Calnexin-CT Antibody: ATTO 488 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-A488, RRID: AB_2703943)
- SPC-182B-A594 — Size: 200 ug: Calnexin-CT Antibody: ATTO 594 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-A594, RRID: AB_2703945)
- SPC-182B-APC — Size: 200 ug: Calnexin-CT Antibody: APC (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-APC, RRID: AB_2703951)
- SPC-182B-BI — Size: 200 ug: Calnexin-CT Antibody: Biotin (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-BI, RRID: AB_2703952)
- SPC-182B-FITC — Size: 200 ug: Calnexin-CT Antibody: FITC (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-FITC, RRID: AB_2703953)
- SPC-182B-HRP — Size: 200 ug: Calnexin-CT Antibody: HRP (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-HRP, RRID: AB_2703954)
- SPC-182B-PCP — Size: 200 ug: Calnexin-CT Antibody: PerCP (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-PCP, RRID: AB_2703956)
- SPC-182B-RPE — Size: 200 ug: Calnexin-CT Antibody: RPE (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182B-RPE, RRID: AB_2703957)
- SPC-182S — Size: 12 ug: Calnexin-CT Antibody (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-182S, RRID: AB_2068990)
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.
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