Listeriolysin-O Recombinant

Lyophilized powder at room temperature.

Molecular weight of Listeriolysin O is 58kDa. This haemolysin protein is provided in its mature form that is constituted by 503 amino acids, from 26 to 529 of the registered sequence (accession number: AAF64524).
Physical Appearance and Stability: Store at 4C if entire vial will be used within 2-4 weeks. Store, frozen at -20C for longer periods of time. Avoid multiple freeze-thaw cycles.
Formulation and Purity: The protein contains 50mM NaH2PO4, 1mM EDTA, 2.7mM KCl, 1mM DTT, 5% (v/v) glycerol and 0.5M NaCl. Greater than 90.0% as determined by SDS-PAGE.
Application: a. Cytosolic delivery of molecules, peptides, oligonucleodides and plasmid DNA (4). b. Production of specific monoclonal antibodies (5). c. Detection of anti-listeriolysin O antibodies (6).
Biological Activity: Hemolytic activity for Recombinant Listeriolysin O was 1.18 x 105 HU/mg of protein where HU means hemolytic activity unit that is the amount of toxin needed to release half the hemoglobin (50% lysis) of the erythrocytes as determined by hemolysin assay.2mM DTT is used to reactivate the toxin.