CyFlow™ CD4 Purified

CyFlow™ CD4 Purified
Antigen: CD4
Alternative Name: Leu3a, T4
Clone: MEM-16
Application: Flow cytometry, Immunoprecipitation
Format/Fluorochrome: Purified
Target Species: Human
Field of Interest: Immunophenotyping
Species of Origin: Mouse
Regulatory Status: RUO
Clonality: monoclonal
Isotype: IgM
Order number: CT672597

For Research Use Only
Not for use in diagnostic or therapeutic procedures.

HLDA Workshop HLDA V—WS Code T T-CD04.10 HLDA VI—WS Code T 6T-013 Concentration Unit... more
CyFlow™ CD4 Purified
HLDA WorkshopHLDA V—WS Code T T-CD04.10 HLDA VI—WS Code T 6T-013
Concentration Unitmg/mL
Concentration1
Quantity0.1 mg
ImmunogenHPB cell line (human peripheral blood leukemia T-cells)
SpecifityThe mouse monoclonal antibody MEM-16 recognizes an epitope EF loop of D1 domain of CD4 antigen, a 55 kDa transmebrane glycoprotein expressed on a subset of T lymphocytes ("helper" T-cells) and also on monocytes, tissue macrophages and granulocytes.
Background InformationCD4 (T4) is a single chain transmembrane glycoprotein and belongs to immunoglobulin supergene family. In extracellular region there are 4 immunoglobulin-like domains (1 Ig-like V-type and 3 Ig-like C2-type). Transmembrane region forms 25 aa, cytoplasmic tail consists of 38 aa. Domains 1,2 and 4 are stabilized by disulfide bonds. The intracellular domain of CD4 is associated with p56Lck, a Src-like protein tyrosine kinase. It was described that CD4 segregates into specific detergent-resistant T-cell membrane microdomains. Extracellular ligands: MHC class II molecules (binds to CDR2-like region in CD4 domain 1); HIV envelope protein gp120 (binds to CDR2-like region in CD4 domain 1); IL-16 (binds to CD4 domain 3), Human seminal plasma glycoprotein gp17 (binds to CD4 domain 1), L-selectin . Intracellular ligands: p56LckCD4 is a co-receptor involved in immune response (co-receptor activity in binding to MHC class II molecules) and HIV infection (human immunodeficiency virus; CD4 is primary receptor for HIV-1 surface glycoprotein gp120). CD4 regulates T-cell activation, T/B-cell adhesion, T-cell diferentiation, T-cell selection and signal transduction. Defects in antigen presentation (MHC class II) cause dysfunction of CD4+ T-cells and their almost complete absence in patients blood, tissue and organs (SCID immunodeficiency).
Storage BufferThe reagent is provided in Tris buffered saline (TBS) solution, pH ≈8.0, containing 0.1% (w/v) sodium azide.
StorageAvoid prolonged exposure to light. Store in the dark at 2-8°C. Do not freeze.
StabilityDo not use after expiration date stamped on vial label.

Specific References

| Doussis IA, Gatter KC, Mason DY: CD68 reactivity of non‑macrophage derived tumours in cytological specimens. J·Clin·Pathol. 1993·Apr; 46(4):334‑6. <·PMID:·7684403·> | Kishimoto T, Goyert S, Kikutani H, Mason D, Miyasaka M, Moretta L, Ohno T, Okumura K, Shaw S, Springer TA, Sugamura K, Sugawara H, von dem Borne AEGK, Zola H (Eds): Leucocyte Typing VI. Garland·Publishing·Inc,·New·York. 1997; 1‑1342. <·NLM·ID:·9712219·> | Brdicková N, Brdicka T, Angelisová P, Horváth O, Spicka J, Hilgert I, Paces J, Simeoni L, Kliche S, Merten C, Schraven B, Horejsí V: LIME: a new membrane Raft‑associated adaptor protein involved in CD4 and CD8 coreceptor signaling. J·Exp·Med. 2003·Nov·17; 198(10):1453‑62. <·PMID:·14610046·> | Foster-Cuevas M, Wright GJ, Puklavec MJ, Brown MH, Barclay AN: Human herpesvirus 8 K14 protein mimics CD200 in down‑regulating macrophage activation through CD200 receptor. J·Virol. 2004·Jul; 78(14):7667‑76. <·PMID:·15220441·> | Clancy L, Mruk K, Archer K, Woelfel M, Mongkolsapaya J, Screaton G, Lenardo MJ, Chan FK: Preligand assembly domain‑mediated ligand‑independent association between TRAIL receptor 4 (TR4) and TR2 regulates TRAIL‑induced apoptosis. Proc·Natl·Acad·Sci·USA. 2005·Dec·13; 102(50):18099‑104. <·PMID:·16319225·> | Mikesch JH, Buerger H, Simon R, Brandt B: Decay‑accelerating factor (CD55): a versatile acting molecule in human malignancies. Biochim·Biophys·Acta. 2006·Aug; 1766(1):42‑52. <·PMID:·16784816·>