CD99-L2 Antibody [Alexa Fluor® 700]

• Reactivity: Hu
• Applications: WB
• Clonality: Polyclonal
• Host: Sheep
• Conjugate: Alexa Fluor 700

CD99-L2 Antibody [Alexa Fluor® 700] Summary

• Immunogen: Chinese hamster ovary cell line CHO-derived recombinant human CD99‑L2
  Val20-Ala188
  Accession # Q8TCZ2
• Specificity: Detects human CD99‑L2 in direct ELISAs and Western blots.
• Isotype: IgG
• Clonality: Polyclonal
• Host: Sheep
• Purity: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide
• Purity: Antigen Affinity-purified

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for CD99-L2 Antibody [Alexa Fluor® 700]

• CD99 antigen
• CD99 antigen-like 2
• CD99 antigen-like protein 2
• CD99 molecule-like 2
• CD99B
• CD99L2
• CD99-L2
• DKFZp761H2024
• MIC2 like 1
• MIC2L1
• MIC2-like protein 1

Background

CD99 antigen-like 2 (CD99-L2) is a 45 kDa type I transmembrane glycoprotein in the CD99 family of molecules (1‑3). The major form of human CD99-L2 cDNA encodes a 262 amino acid (aa) precursor with a 25 aa predicted signal sequence, a 160 aa extracellular domain (ECD), a 21 aa transmembrane (TM) segment, and a 56 aa cytoplasmic region (4). This form is called the long form, or isoform E3’-E4’-E3-E4. Other isoforms include the muscle E3-E4, missing aa 45‑93, and E4, a short form missing aa 45‑116 (1, 4). E3-E4 and E3’-E3-E4 forms are the major isoforms in mouse and rat, respectively (1). Human forms that diverge at Pro 45 (145 aa precursor) or Met 180 (173 aa precursor) have been sequenced, and would be predicted to lack a TM segment (4, 5). None of the forms contain predicted N-linked glycosylation sites within the ECD, but O-linked glycosylation is likely (1, 2). The ECD of the human CD99-L2 isoform E3-E4 shares 85%, 75% and 70% aa identity with the corresponding forms of mouse, rat, and bovine CD99-L2, respectively. The human CD99 and CD99-L2 ECDs share only about 35% aa identity, but both contain three conserved acidic motifs and are thought to originate from the same ancestral gene (1, 2). The nearly ubiquitous expression of CD99-L2 is similar to that of CD99. Human CD99-L2 cDNA is detected in most organs, but not in thymus (1). In the mouse, protein is detectable in lung, thymocytes, mouse leukocytes and vascular endothelial cells (1, 3, 6). The endothelial cell CD99-L2 is reported to mediate cell aggregation and neutrophil or monocyte, but not lymphocyte, extravasation to inflamed tissue in vivo (3, 6).

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.