| Full Name |
MIP-3/CCL23, Human
|
Abbreviated Name-1 |
MIP-3/CCL23, Human; |
|
Description |
MIP-3/CCL23 is a CC chemokine that signals through the CCR1 receptor. MIP-3 chemoattracts monocytes, resting T-lymphocytes and neutrophils, but does not chemoattract activated lymphocytes. Additionally, MIP-3 has been shown to inhibit colony formation of bone marrow myeloid immature progenitors. Alternative splicing of the MPIF1 gene results in two mRNAs that encode a short (CKß8) and a long (CKß81) isoform of the chemokine. CKß8 cDNA encodes a 120 amino acid (aa) residue precursor protein with a putative 21 aa residue signal peptide that is cleaved to generate a 99 aa residue mature CKß8 (aa 22 120). Additional N terminal processing of the 99 aa residue variant can generate a 75 aa residue CKß8 (aa 46 120) that is significantly more active than the 99 aa residue variant. |
Source |
Escherichia coli. |
M.W. |
11.3 kDa, a single, non-glycosylated polypeptide chain containing 99 amino acids. |
Purity |
>97% by SDS-PAGE and HPLC analyses. |
Endotoxin Level |
Less than 0.2EU/ug of rHuMIP-3/CCL23 as determined by LAL method. |
Specific Activity |
Fully biologically active when compared to standard. The ED50 determined by a chemotaxis bioassay using human THP-1 cells is less than 40 ng/ml, corresponding to a specific activity of ＞ 2.5 × 104 IU/mg. |
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. |
Formulation |
Lyophilized from a 0.2µm filtered concentrated solution in 20mM PB, pH 7.4, 150mM NaCl. |
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. |
Physical Appearance |
Sterile Filtered White lyophilized (freeze-dried) powder. |
Usage |
This material is for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE. |
Sequence |
RVTKDAETEF MMSKLPLENP VLLDRFHATS ADCCISYTPR SIPCSLLESYFETNSECSKP GVIFLTKKGR RFCANPSDKQ VQVCMRMLKL DTRIKTRKN |
Document-MSDS: 15390_20120105040910.PDF (PDF)