Recombinant Human RANTES （rHuRANTES/ CCL5） PR1111
Specifications
| 5µg / 20µg / 1.0mg |
Source:
Escherichia coli.
Molecular Weight:
7.8 kDa, a single non-glycosylated polypeptide chain containing 68 amino acids.
Purity:
>98% by SDS-PAGE and HPLC analyses.
Biological activity:
Measured by its ability to chemoattract human CCR5 transfected BaF3 mouse pro-B cells.The ED50 for this effect is typically 1-5ng/mL, corresponding to a Specific Activity of ＞2 x 105 IU/mg.
AA Sequence:
SPYSSDTTPC CFAYIARPLP RAHIKEYFYT SGKCSNPAVV FVTRKNRQVC ANPEKKWVRE YINSLEMS
Endotoxin:
Less than 1EU/mg of rHuRANTES/ CCL5 as determined by LAL method.
Formulation:
Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 7.4, 100mM NaCl.
Background:
CCL5 or RANTES (acronym for Regulated upon Activation, Normal T cell Expressed and presumably Secreted), was initially discovered by subtractive hybridization as a transcript expressed in T cells but not B cells. Eosinophilchemotactic activities released by thrombinstimulated human platelets have also been purified and found to be identical to RANTES. Besides T cells and platelets, RANTES has been reported to be produced by renal tubular epithelium, synovial fibroblasts and selected tumor cells.
Usage:
This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.
Physical Appearance:
Sterile Filtered White lyophilized (freeze-dried) powder.
Reconstitution:
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.
Storage:
This lyophilized preparation is stable 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.