Detection of Aminopeptidase N/CD13 in U937 Human Cell Line by Flow Cytometry.
U937 human histiocytic lymphoma cell line was stained with Sheep Anti-Human Aminopeptidase N/CD13 Biotinylated Antigen Affinity‑purified Polyclonal Antibody (Catalog # BAF3815, filled histogram) or control antibody (Catalog # BAF020, open histogram), followed by Streptavidin-Phycoerythrin (Catalog # F0040).
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it 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: Aminopeptidase N/CD13
The human ANPEP gene encodes aminopeptidase N (APN), which is also known as microsomal aminopeptiase, alanyl aminopeptidase, aminopeptidase M, CD13, or membrane protein p161 (1‑3). The deduced amino acid sequence of human APN consists of a short cytoplasmic tail (residues 2 to 8), a transmembrane region (residue 9 to 32), a Ser/Thr rich region and a zinc metalloprotease domain (residues 69 to 966). Widely expressed in many cells, tissues and species, APN cleaves the N-terminal amino acids from bioactive peptides, leading to their inactivation or degradation. The roles of APN in many fields, such as neuroscience, hematopoeitic cells, immune system, angiogenesis, cancer and viral infection, have been reviewed (3).
Olsen, J. et al. (1988) FEBS Lett. 238:307.
Look, A.T. et al. (1989) J. Clin. Invest. 83:1299.
Turner, A.J. (2004) in Handbook of Proteolytic Enzymes (ed. Barrett, et al.) pp. 289, Academic Press, San Diego.
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