病毒巨噬细胞炎症蛋白2(MIP-2) (VIRAL)

产品描述:
Viral MIP-2 cDNA encodes a 94 amino acid residue precursor protein with a 23 aa residue signal peptide that is cleaved to yield a 71 aa residue mature protein. Among human chemokines, ViMIP-2 is most closely related to MIP-1α, sharing approximately 41% amino acid sequence identity. At the amino acid sequence level, ViMIP-1 and ViMIP-2 also share 48% identity. ViMIP-1 and ViMIP-2 are more closely related to one another phylogenetically than to other human chemokines, suggesting that they may have arisen by gene duplication within the virus rather than by two independent gene aquisitions. ViMIP-2 binds to the CCR3 chemokine receptor through which eotaxin and other β chemokines activate eosinophils. ViMIP-2 has been shown to activate and chemoattract human eosinphils.

表达系统 :
Escherichia coli

溶解方法:
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.

产品组成:
Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM PB, pH 7.4, 150 mM NaCl.

存储条件:
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.

分子量:
Approximately 7.9 kDa, a single, non-glycosylated polypeptide chain containing 70 amino acids.

内毒素:
Less than 1 EU/μg of MIP-2 as determined by LAL method.

产品用途:
This material is offered by Cyagen Biosciences for research, laboratory or further evaluation purposes. FOR RESEARCH USE ONLY. NOT INTENDED FOR ANY ANIMAL OR HUMAN THERAP EUTIC OR DIAGNOSTIC USE.

生物学活性:
The specific activity is determined by the inhibitory effect on monocyte migration response to human MIP-1 alpha using a concentration range of 1.0-10.0 µg/mL of viral MIP-2 will inhibit 25 ng/mL of human MIP-1 alpha.

产品形态:
Sterile filtered white lyophilized (freeze-dried) powder.

氨基酸序列:
LGASWHRPDK CCLGYQKRPL PQVLLSSWYP TSQLCSKPGV IFLTKRGRQV CADKSKDWVK KLMQQLPVTA

产品纯度:
> 97% by SDS-PAGE and HPLC analyses.