Goat anti Human Interleukin-21 antibody recognizes human interleukin-21, also known as IL-21 or Za11. IL-21 is a , a 155 amino acid pro-cytokine, reduced to 133 anino acids in the secreted mature form. IL-21 is a potent immunoregulatory cytokine and member of the IL-15/IL-21 family, expressed and secreted by activated CD4+ T cells. Two potential isoforms are generated by alternative splicing and differing is sequence atthe C-terminus (UniProt: Q9HBE4). Goat anti Human interleukin-21 antibody recognizes an epitope within the N-terminal (NT) region of human interleukin-21 (IL-21) and is expected to bind both isoforms.
IL-21 enhances the proliferation/differentiation of stimulated B-cells, the proliferation of bone marrow progenitor cells, and increases the activity of NK cells and disease-specific CD8+ T-cells. IL-21 signals through binding to the specific type I cytokine receptor IL-21R, coupled with the common cytokine receptor g chain (gc), initiating the activation of the JAK/STAT signalling pathway.
Goat anti Human Interleukin-21 antibody is suitable for use in immunocytochemistry on human spleen or tonsil cells.
Purified IgG - liquid
Antiserum to human IL-21 (NT) was raised by repeated immunisation of goats with highly purified antigen. Purified IgG was prepared by affinity chromatography.
0.1% Sodium Azide (NaN3) 0.1% Bovine Serum Albumin
Synthetic peptide C-RQLIDIVDQLKNYVNDLVPEFLPAPEDVE corresponding to amino acids 40-68 within the N-terminal region of human IL-21.
Approx. Protein Concentrations
IgG concentration 1.0 mg/ml
Reagents In The Kit
Preparing The Antibody
Phosphate buffered saline
Store at -20oC only. Storage in frost-free freezers is not recommended. This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.
This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visit the antibody protocols page.
Immunohistology - Paraffin(1)
IL-21 antibody requires antigen retrieval using heat treatment prior to staining of paraffin sections.
Where this product has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own system using appropriate negative/positive controls.
AHP1817 may be used for the detection of human IL-21 in combination with AHP1816