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Recombinant Human Macrophage-Derived Chemokine/CCL22 (rHuMDC/CCL22)

MDC is a CC chemokine that is produced in B cells, macrophages, monocyte-derived dendritic cells, activated NK cells and CD4 T cells. It signals through the CCR4 receptor. MDC chemoattracts monocytes, dendritic cells and NK cells and exerts HIV suppressive activity.

Product Specifications

Source

Escherichia coli.

Field of Research

Immunology & Inflammation

Endotoxin

Less than 1EU/mg of rHuMDC/CCL22 as determined by LAL method.

Purity

>97% by SDS-PAGE and HPLC analyses.

Bioactivity

Fully biologically active when compared to standard. Determined by its ability to chemoattract human T cells using a concentration range of 10.0-100.0 ng/ml, corresponding to a Specific Activity of >1 x 104 IU/mg.

Form

Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 7.4, 500mM NaCl.

Molecular Weight

8.1 kDa, a single, non-glycosylated polypeptide chain containing 69 amino acids.

Storage Conditions

This lyophilized preparation is stable for several weeks at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.

Notes

For research use only.

Applications Notes

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.

Preservative

Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 7.4, 500mM NaCl.

AA Sequence

GPYGANMEDS VCCRDYVRYR LPLRVVKHFY WTSDSCPRPG VVLLTFRDKE ICADPRVPWV KMILNKLSQ

Available Sizes

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