• Purity

  >97%, by SDS-PAGE under reducing conditions and visualized by silver stain

• Endotoxin Level

  <0.10 EU per 1 μg of the protein by the LAL method.  

• Activity

  Measured by its ability to chemoattract BW5147 mouse T lymphoma cells. The ED    ₅₀ for this effect is 2-6 ng/mL. Measured by its ability to chemoattract BaF3 mouse pro?B cells transfected with human CCR8. The ED    ₅₀ for this effect is 4-16 ng/mL.

• Source

  E. coli-derived Ala25-Ala95

• Accession #

• N-terminal Sequence    
  Analysis

  Ala25

• Predicted Molecular Mass

  7.9 kDa

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Background: MIP-I

Human herpesvirus-8 (HHV-8)/Kaposi’s sarcoma-associated herpesvirus (KSHV) is a gamma  herpesvirus with homology to herpesvirus Saimiri and Epstein-Barr virus. HHV-8 is etiologically linked to Kaposi’s sarcoma and a B-cell lymphoma known as primary effusion lymphoma. HHV-8 has been shown to encode a variety of immunomodulatory proteins which were apparently pirated from cellular genes by the virus. Three chemokine-like proteins, vMIP-I, vMIP-II and vMIP-III have been found to be encoded within the HHV-8 genome.

Viral MIP-I (also termed vMIP-1 alpha ) cDNA encodes a 95 amino acid (aa) residue precursor protein with a 24 aa residue signal peptide that is cleaved to yield a 71 aa residue mature protein. Among human chemokines, vMIP-I is most closely related to MIP-1 alpha, sharing approximately 38% amino acid sequence identity. At the amino acid sequence level, vMIP-I and vMIP-II also share 48% identity. vMIP-I and vMIP-II 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. Both vMIP-I and vMIP-II have been shown to partially block HIV infection of peripheral blood mononuclear cells. vMIP-I and vMIP-II have also been found to be highly angiogenic in the chorioallantoic assay, suggesting that they may be partially responsible for the marked vascularity seen in KSHV-associated tumors.

• References:

1. Moore, P.S. et al. (1996) Science 274:5293.

2. Boshoff, C. et al. (1997) Science 278:290.

• Long Name:

  Macrophage Inflammatory Protein I

• Alternate Names:

  MIPI; MIP-I