Measured by its ability to chemoattract BW5147 mouse T lymphoma cells. The ED50 for this effect is 3-9 ng/mL. Measured by its ability to chemoattract BaF3 mouse pro‑B cells transfected with human CCR8. The ED50 for this effect is 1.5-7.5 ng/mL.
Source
E. coli-derived human CCL1/I-309/TCA-3 protein Lys24-Lys96
>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
Bioactivity2
Theoretical MW
8.5 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 272-I/CF in the following applications:
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.
3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
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 CCL1/I-309 Protein, CF
C-C motif chemokine 1
CCL1
chemokine (C-C motif) ligand 1
I-309
inflammatory cytokine I-309
P500
SCYA1
SCYA1Small-inducible cytokine A1
SCYA2
SISe
small inducible cytokine A1 (I-309, homologous to mouse Tca-3)
T lymphocyte-secreted protein I-309
TCA3
TCA-3
Background
Human CCL1 was initially identified by subtractive hybridization as a transcript that was present in a gamma /δ T cell line but not in EBV-transformed B cells. Human CCL1 has been assumed to be a homologue of the mouse TCA3. While the two proteins share only approximately 42% amino acid sequence identity, both chemokines contain an extra pair of cysteine residues not found in most other chemokines. Human CCL1 and mouse TCA3 also share significant sequence homology in the 5’ flanking region of their genes.
CCL1 cDNA encodes a 96 amino acid residue precursor protein with a hydrophobic signal peptide that is cleaved to yield a 73 amino acid residue mature protein. The sequence of CCL1 contains one potential N-linked glycosylation site and natural CCL1 secreted by activated T cells is a glycoprotein doublet of 15 - 16 kDa. The amino acid sequence of CCL1 identified the protein as a member of the chemokine beta subfamily.
Miller, M.D. et al. (1992) Proc. Natl. Acad. Sci. USA 89:2950.
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