Feline CD8 alpha Antibody

Catalog #: AF2598 Datasheet

Catalog #	Availability	Size / Price	Qty
AF2598
AF2598-SP

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Feline CD8 alpha Antibody Summary

Species Reactivity

Feline

Specificity

Detects feline CD8 alpha in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 25% cross-reactivity with recombinant mouse CD8 alpha is observed, approximately 5% cross-reactivity with recombinant canine CD8 alpha is observed, and less than 1% cross-reactivity with recombinant human CD8 alpha is observed.

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

Mouse myeloma cell line NS0-derived recombinant feline CD8 alpha
Ala22-Tyr188
Accession # P41688

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Applications

Recommended Concentration

Sample

Western Blot

0.1 µg/mL

Recombinant Feline CD8 alpha

Immunocytochemistry

5-15 µg/mL

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Immunocytochemistry

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CD8 alpha in Feline PBMCs. CD8a was detected in immersion fixed feline peripheral blood mononuclear cells (PBMCs) using Goat Anti-Feline CD8a Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2598) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Preparation and Storage

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CD8

CD8 is a dimeric complex made up of two Ig superfamily members. The CD8 alpha chain is a 34 kDa type I transmembrane glycoprotein that is disulfide-linked, either to itself forming CD8 alpha alpha, or to an unrelated 30-35 kDa CD8 beta chain, forming CD8 alpha beta. CD8 alpha contains one V-type Ig-like domain in its extracellular region that binds to class I MHC molecules. CD8 alpha beta is a TCR coreceptor, while CD8 alpha alpha promotes T cell survival and differentation. Feline CD8 alpha extracellular region shares 58%, 47%, 51%, and 69% amino acid sequence identity with human, mouse, porcine, and canine CD8 alpha extracellular regions, respectively.

Entrez Gene IDs

925 (Human); 12525 (Mouse); 24930 (Rat); 102124337 (Cynomolgus Monkey); 493799 (Feline)

Alternate Names

CD_antigen: CD8a; CD8 antigen, alpha polypeptide (p32); CD8; CD8a molecule; CD8A; Leu2 T-lymphocyte antigen; LEU2; MAL; OKT8 T-cell antigen; p32; T cell co-receptor; T8 T-cell antigen; T-cell antigen Leu2; T-cell surface glycoprotein CD8 alpha chain; T-lymphocyte differentiation antigen T8/Leu-2