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CyFlow™ CD5 Purified

CyFlow™ CD5 Purified
Antigen: CD5
Alternative Name: Leu-1, T1
Clone: CRIS1
Application: Enzyme-linked immunosorbent assay, Flow cytometry, Immunohistochemistry (frozen sections), Immunoprecipitation, Western blot
Format/Fluorochrome: Purified
Target Species: Human
Field of Interest: Immunophenotyping
Species of Origin: Mouse
Regulatory Status: RUO
Clonality: monoclonal
Isotype: IgG2a
Order number: CT745017

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

HLDA Workshop HLDA I—WS Code T 29 HLDA III—WS Code T 530 Concentration Unit mg/mL... more
CyFlow™ CD5 Purified
HLDA WorkshopHLDA I—WS Code T 29 HLDA III—WS Code T 530
Concentration Unitmg/mL
Concentration1
Quantity0.1 mg
Volume0.1
ImmunogenStimulated human leukocytes
Background InformationCD5 (T1) is a human cell surface T-lymphocyte single-chain transmembrane glycoprotein. CD5 is expressed on all mature T-lymphocytes, most of thymocytes, subset of B-lymphocytes and on many T-cell leukemias and lymphomas. It is a type I membrane glycoprotein whose extracellular region contains three scavenger receptor cysteine-rich (SRCR) domains. The CD5 is a signal transducing molecule whose cytoplasmic tail is devoid of any intrinsic catalytic activity. CD5 modulates signaling through the antigen-specific receptor complex (TCR and BCR). CD5 crosslinking induces extracellular Ca++ mobilization, tyrosine phosphorylation of intracellular proteins and DAG production. Preliminary evidence shows protein associations with ZAP-70, p56lck, p59fyn, PC-PLC, etc. CD5 may serve as a dual receptor, giving either stimulatory or inhibitory signals depending both on the cell type and development stage. In thymocytes and B1a cells seems to provide inhibitory signals, in peripheral mature T lymhocytes it acts as a costimulatory signal receptor. CD5 is the phenotypic marker of a B cell subpopulation involved in the production of autoreactive antibodies. Disease relevance: CD5 is a phenotypic marker for some B cell lymphoproliferative disorders (B-CLL, Hairy cell leukemia, etc.). The CD5+ popuation is expanded in some autoimmune disorders (Rheumatoid Arthritis, etc.). Herpes virus infections induce loss of CD5 expression in the expanded CD8+ human T cells.
Storage BufferThe reagent is provided in phosphate buffered saline (PBS) solution, pH ≈7.4, containing 0.09% (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

| McMichael AJ, Beverley PCL, Cobbold S, et al (Eds): Leucocyte Typing III, White Cell Differentiation Antigens. Oxford·University·Press,·Oxford. 1987; 1‑1050. <·NLM·ID:·8913266·> | Arrizabalaga P, Mirapeix E, Darnell A, Torras A, Revert L: Cellular immunity analysis using monoclonal antibodies in human glomerulonephritis. Nephron. 1989; 53(1):41‑9. <·PMID:·2789343·> | Freedman AS, Freeman G, Whitman J, Segil J, Daley J, Levine H, Nadler LM: Expression and regulation of CD5 on in vitro activated human B cells. Eur·J·Immunol. 1989·May; 19(5):849‑55. <·PMID:·2472277·> | Alberola-Ila J, Places L, Cantrell DA, Vives J, Lozano F: Intracellular events involved in CD5‑induced human T cell activation and proliferation. J·Immunol. 1992·Mar·1; 148(5):1287‑93. <·PMID:·1371522·> | Guarne A, Bravo J, Calvo J, Lozano F, Vives J, Fita I: Conformation of the hypervariable region L3 without the key proline residue. Protein·Sci. 1996·Jan; 5(1):167‑9. <·PMID:·8771210·> | Raman C: CD5, an important regulator of lymphocyte selection and immune tolerance. Immunol·Res. 2002; 26(1‑3):255‑63. <·PMID:·12403363·>