Detection of TAFA4/FAM19A4 in A172 Human Cell Line by Flow Cytometry.
A172 human glioblastoma cell line was stained with Mouse Anti-Human TAFA4/FAM19A4 Monoclonal Antibody (Catalog # MAB5099, filled histogram) or isotype control antibody (Catalog # MAB002, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG F(ab')2 Secondary Antibody (Catalog # F0102B). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with saponin.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
TAFA4 (also FAM19A4) is a secreted, 12 kDa member of the FAM19/TAFA family of chemokine-like proteins (1). It is synthesized as a 140 amino acid (aa) precursor that contains a 35 aa signal sequence and a 105 aa mature chain. Like other members of the FAM19/TAFA family, with the exception of TAFA5, mature TAFA1 contains 10 regularly spaced cysteine residues that follow the pattern Cx7CCx13CxCx14Cx11Cx4Cx5Cx10C, where C represents a conserved cysteine residue and x represents any noncysteine amino acid (1). Human TAFA4 is 90% aa identical to mouse TAFA4 (1). Real-time PCR analysis indicates that TAFA4 mRNA expression is restricted to the central nervous system (CNS), with the highest level in the thalamus (1). TAFAs may modulate immune responses in the CNS by functioning as brain specific chemokines and may act with other chemokines to optimize the recruitment and activity of immune cells in the CNS (1). TAFAs may represent a novel class of neurokines that act as regulators of immune nervous cells (1, 2). TAFAs may also control axonal sprouting following brain injury (1).
Tang, Y.T. et al. (2004) Genomics 83:727.
Benveniste, E. (1998) Cytokine Growth Factor Rev. 9:259.
Family with Sequence Similarity 19, Member A4
Entrez Gene IDs:
151647 (Human); 320701 (Mouse)
Chemokine-like protein TAFA-4; FAM19A4; family with sequence similarity 19 (chemokine (C-C motif)-like), member A4; FLJ25161; TAFA4; TAFA-4
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