374825
Hemocyanin, Keyhole Limpet, Megathura crenulata, High Purity, Endotoxin-Free, Sterile-Liquid
Hemocyanin, Keyhole Limpet, Megathura crenulata, High Purity, Endotoxin Free, is a large, multi-subunit, O2-carrying, metalloprotein that is used as a carrier protein in the production of antibodies.
Synonym(s):
Hemocyanin, Keyhole Limpet, Megathura crenulata, High Purity, Endotoxin-Free, Sterile-Liquid
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About This Item
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Quality Level
assay
≥95% (size exclusion chromatography)
form
liquid
manufacturer/tradename
Calbiochem®
storage condition
do not freeze
impurities
≤25 EU/mg Endotoxin
≥1.5 x 10⁻³ copper to protein ratio
≥5 mg/mL Protein
color
clear bluish
shipped in
wet ice
storage temp.
2-8°C
General description
Keyhole limpet hemocyanin (KLH) is a large, multi-subunit, O2-carrying, metalloprotein. This high molecular weight glycoprotein is extracted from a marine snail species called Megathura crenulate.
Application
Hemocyanin, Keyhole Limpet, Megathura crenulata, high purity, endotoxin-free, sterile-liquid has been used as an antigen to test the polyreactivity of monoclonal antibody (mAb) using enzyme-linked immunosorbent assay(ELISA). It has also been used to immunize animals to study KLH-specific ex vivo recall responses and specific T-cell dependent antibody response (TDAR) in monkeys.
Biochem/physiol Actions
Keyhole limpet hemocyanin (KLH) stimulates both cell-mediated and humoral responses in animals and humans. It elicits immunostimulatory properties and also functions as a vaccine adjuvant. KLH serves as a carrier protein to produce antibodies and haptens like peptides and oligosaccharides. It is used to treat bladder cancer.
Packaging
Please refer to vial label for lot-specific concentration.
Warning
Toxicity: Standard Handling (A)
Physical form
In 83 mM sodium phosphate, 150 mM NaCl, pH 7.2.
Preparation Note
KLH is an extremely large protein complex that has a tendency to aggregate and precipitate from solutions. Use a buffer when diluting KLH and maintain the magnesium concentration at ≥10 mM. Store KLH solutions at 4°C. DO NOT freeze, vortex or agitate to dissolve KLH. Freezing or agitating KLH will cause protein aggregation and precipitation.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
10 - Combustible liquids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Joshua T Gamse et al.
Toxicology and applied pharmacology, 409, 115285-115285 (2020-10-19)
The OX40 receptor plays a crucial co-stimulatory role in T effector cell survival, expansion, cytokine production, and cytotoxicity to tumor cells; therefore, OX40 agonists are being evaluated as anti-cancer immunotherapies, especially in combination with checkpoint inhibitors. To support clinical development
Erik H J G Aarntzen et al.
Cancer immunology, immunotherapy : CII, 61(11), 2003-2011 (2012-04-25)
Keyhole limpet hemocyanin (KLH) attracts biomedical interest because of its remarkable immunostimulatory properties. Currently, KLH is used as vaccine adjuvant, carrier protein for haptens and as local treatment for bladder cancer. Since a quantitative human anti-KLH assay is lacking, it
Oyindasola Oyelaran et al.
Proteomics. Clinical applications, 4(3), 285-294 (2010-12-08)
Keyhole limpet hemocyanin (KLH) is used as a vaccine adjuvant, as a carrier protein for small haptens, and as a treatment for bladder cancer. Immunization with KLH produces antibodies to tumor-associated carbohydrate antigens (TACAs) in animals, and these antibodies have
Jenna J Guthmiller et al.
Immunity, 53(6), 1230-1244 (2020-10-24)
Polyreactivity is the ability of a single antibody to bind to multiple molecularly distinct antigens and is a common feature of antibodies induced upon pathogen exposure. However, little is known about the role of polyreactivity during anti-influenza virus antibody responses.
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