What is OVA peptide?

What is OVA peptide?

Definition. OVA Peptide is a class I (Kb)-restricted peptide epitope of ovalbumin presented by the class I MHC (major histocompatibility complex) molecule, H-2Kb (class I genes of the mouse MHC).

How do you dissolve OVA peptides?

1. Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.)…

  1. Try to dissolve the peptide in water first.
  2. If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
  3. If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.

What is Siinfekl peptide?

Ovalbumin peptide SIINFEKL (H-2 Kb) is a single peptide for stimulation of T cells. The peptide from Ovalbumin is synthesized as it is presented by the MHC class I H-2 Kb allele and can be used for targeted in vitro generation and expansion of antigen-specific CD8+ T cells.

Why is ovalbumin used in immunology?

Chicken OVA is a T Cell-dependent antigen commonly used as a model protein for studying antigen-specific immune responses in mice. It is non-toxic and inert and therefore will not cause harm to the animals even if no immune response is induced.

How do you dilute peptides?

Try to dissolve the peptide in distilled water if possible. If it fails to dissolve in water, then try to dissolve the peptide in a small amount of 10–25% acetic acid. If this fails, add TFA (10–50 µl) to solubilize the peptide, and then dilute it to your desired concentration.

How do you know if a peptide is soluble?

Determining Solubility Characteristics In general, the more charged residues the peptide possesses, the more soluble it is in aqueous solutions. In addition, peptides generally have more charges at pH 6–8 than at pH 2–6. It is for this reason that peptides are better dissolved at near neutral pH.

What is h2kb?

Abstract. The peptide-binding site of the murine MHC class I molecule H-2Kb contains a deep C pocket, that is critical for peptide binding, as it accepts the anchor phenylalanine or tyrosine residue located in the middle (position 5, P5F/Y) of H-2Kb binding peptides. H-2Kb predominantly binds octameric peptides.

What is ova challenge?

What does ovalbumin do for humans?

Ovalbumin is the first protein isolated in pure form and is about half of the total egg albumen protein. It is best known for its various biological activities, like anticancer, antihypertensive, antimicrobial, antioxidant, and immune-modulating activities.

What do you dilute peptides with?

If the overall charge of the peptide is positive, try to dissolve the peptide in water. If the peptide cannot be dissolved, try 10% to 30% acetic acid solution. If the peptide still does not dissolve, add TFA (< 50 μl) to solubilize the peptide and dilute to the desired concentration.

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