RecombinantRANTES/CCL5, Human (HEK293-expressed)

Chemokine (C-C motif) ligand 5 (CCL5), also known as RANTES (Regulated upon activation, Normal T cell Expressed and presumable Secreted) is a CC-chemokine that can signal through the CCR1, CCR3, CCR5 and US28 (cytomegalovirus receptor) receptors. RANTES is chemotactic for T cells, eosinophils, and basophils, and plays an active role in recruiting leukocytes in inflammatory sites. With the help of specific cytokines (i.e., IL-2 and IFN-γ) that are released by T cells, RANTES induces the proliferation and activation of certain natural-killer (NK) cells to form CHAK (CC-Chemokine-activated killer) cells. RANTES is also an HIV-suppressive factor released from CD8+ T cells. This chemokine has been localized to chromosome 17 in humans. It has the capability to inhibit certain strains of HIV-1, HIV-2 and simian immunodeficiency virus (SIV) .Recombinant human RANTES/CCL5 produced in HEK293 cells is a single polypeptide chain containing 68 amino acids. A fully biologically active molecule, rhRANTES/CCL5 has a molecular mass of 8 kDa analyzed by reducing SDS-PAGE and is obtained by chromatographic techniques at GenScript.

Product Specifications

CAS Number

9000-83-3

Endotoxin

< 0.2 EU/μg, determined by LAL method.

Purity

> 98% as analyzed by SDS-PAGE.

Bioactivity

The EC50 value of human RANTES/CCL5 on Caˆ2+ mobilization assay in CHO-K1/Gα15/hCCR1 cells (human Gα15 and human CCR1 stably expressed in CHO-K1 cells) is less than 0.2 μg/ml.

Reconstitution

Reconstituted in ddH2O or PBS at 100 μg/ml.

Molecular Weight

8 kDa, observed by reducing SDS-PAGE.

Storage Conditions

Lyophilized recombinant human RANTES/CCL5 remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, human RANTES/CCL5 should be stable up to 1 week at 4°C or up to 2 months at -20°C