Chemotaxis Induced by CCL1/ITCA‑3 and Neutralization by Mouse CCL1/ITCA‑3 Antibody. Recombinant Mouse CCL1/|
TCA‑3 (Catalog # 845‑TC) chemoattracts the BaF3 mouse pro‑B cell line transfected with mouse CCR8 in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Mouse CCL1/
TCA‑3 (0.01 µg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse CCL1/TCA‑3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF845). The ND50 is typically 0.3-1.5 µg/mL.
Mouse TCA-3 is a member of the CC beta family of chemokines. The human chemokine I-309, which shares approximately 42% amino acid (aa) sequence identity, has been assumed to be the homologue of mouse TCA-3. Mouse TCA-3 and human I-309 also share significant sequence homology in the 5' flanking region of their genes and each contain an extra pair of cysteine residues not found in most other chemokines.
TCA-3 cDNA encodes a 92 aa residue precursor protein with a predicted 23 aa signal peptide that is cleaved to produce a 69 aa mature protein. The sequence of TCA‑3 contains one potential N-linked glycosylation site. Mouse TCA-3 is found on the distal portion of mouse chromosome 11 in a cluster with MIP-1 alpha, MIP-1 beta, and JE. TCA-3 acts by binding to the seven transmembrane spanning G-protein-coupled receptor, CCR8. TCA-3 has been shown to chemoattract T cells.
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