Measured by its ability to inhibit Eotaxin-induced chemotaxis of BaF3 mouse pro‑B cells transfected with human CCR3. Nibbs, RJB. et al. (2000) J. Immunol. 164:1488. The ED50 for this effect is 1-5 µg/mL.
Source
E. coli-derived human CCL18/PARC protein Ala21-Ala89
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
7.8 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Publications
Read Publications using 394-PA/CF in the following applications:
12 months from date of receipt, ≤ -20 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, ≤ -20 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in Acetonitrile with Trehalose.
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human CCL18/PARC Protein, CF
Alternative macrophage activation-associated CC chemokine 1
AMAC-1
AMAC1CC chemokine ligand 18
AMAC-1Small-inducible cytokine A18
CCL18
chemokine (C-C motif) ligand 18 (pulmonary and activation-regulated)
CKb7
DC-CK1
DC-CK1CC chemokine PARC
DCCK1Macrophage inflammatory protein 4
Dendritic cell chemokine 1
MIP4
MIP-4
MIP-4C-C motif chemokine 18
PARC
PARCPulmonary and activation-regulated chemokine
SCYA18chemokine (C-C), dendritic
small inducible cytokine A18
small inducible cytokine subfamily A (Cys-Cys), member 18, pulmonary andactivation-regulated
Background
CCL18, also known as alternative macrophage activation-associated CC chemokine (AMAC)-1, macrophage inflammatory protein (MIP)-4, and dendritic cell chemokine (DC-CK1), is a novel CC chemokine that is highly homologous to MIP-1 alpha (61% amino acid (aa) sequence identity). CCL18 cDNA encodes an 89 aa residue precursor protein with a 20 aa putative signal peptide that is cleaved to generate a 69 aa residue mature protein which lacks potential glycosylation sites. In vitro, CCL18 mRNA expression is induced in alternatively activated macrophages by Th2 cytokines such as IL-4, IL-10 and IL-13, and inhibited by IFN‑ gamma . CCL18 mRNA is also expressed by GM‑CSF/IL‑4‑induced monocyte-derived dendritic cells. In vivo, CCL18 is highly expressed in lung and placenta but is not expressed in epidermal Langerhans cells. Recombinant CCL18 has been shown to chemoattract naive T cells, but not monocytes or neutrophils.
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