Flow Cytometry. Immunoprecipitation. In vitro and in vivo blocking of CTLA-4 action by soluble antibody. Promotion of in vitro CTLA-4 signalling by cross-linked antibody. See Ref.1 for more details. Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
限制
仅限研究用
浓度
0.5 mg/mL
缓冲液
PBS containing no preservatives.
储存液
Without preservative
储存条件
-20 °C
储存方法
Store the antibody undiluted (in aliquous) at -20 °C. Avoid repeated freezing and thawing. Shelf life: one year from despatch.
有效期
12 months
抗原
CTLA4
(Cytotoxic T-Lymphocyte-Associated Protein 4 (CTLA4))
CD152, also known as CTLA-4, is homologous to the costimulatory molecule CD28. (Ref.1,2) Like CD28, the CD152 Molecule binds the family of B7 counter-receptors (CD80/B7-1 and CD86/B7-2) on antigen-presenting cells. (Ref.3) CTLA-4 is not expressed on resting T lymphocytes but is induced 2-3 days following T-cell stimulation via the T cell receptor (TCR) complex. (Ref.1,3,4) Whereas CD28 provides a positive costimulatory signal, CD152/CTLA-4 is a negative regulator of T-cell activation, possibly by inhibiting tyrosine kinase signalling through the TCR through its association with tyrosine phosphatases such as SHP-2. (Ref.1,5,6)Synonyms: CTLA-4, Cytotoxic T-lymphocyte protein 4, Cytotoxic T-lymphocyte-associated antigen 4