Detection of Human/Mouse CCR4 by Western Blot. Western blot shows lysates of Jurkat human acute T cell leukemia cell line and EL‑4 mouse lymphoblast cell line. PVDF Membrane was probed with 1 µg/mL of Mouse CCR4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5207) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for CCR4 at approximately 42 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8|
CCR4 (C-C chemokine receptor 4) is a 42 kDa member of the GPCR #1 family of transmembrane proteins. In rodent, functional CCR4 is expressed on fully differentiated CD4+ Th2 cells, invariant CD4+ NKT cells, and neurons. It is the receptor for CCL17/TARC, CCL22/MDC and CKLF1, and responds to these ligands by initiating chemotaxis. Mouse CCR4 is a 7-transmembrane protein that is 360 amino acids (aa) in length. It contains a 39 aa N-terminal extracellular domain, and a 52 aa C-terminal cyoplasmic tail that shows a poly-Ser motif between aa 343-346. Over aa sequences 1-39, 99-111, 176-205 and 268-284 collectively, mouse CCR4 shares 85% and 93% aa identity with human and rat CCR4, respectively.
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