Recombinant Rat LIX Protein

Carrier Free

Catalog # Availability Size / Price Qty
543-RL-025/CF

With Carrier

Catalog # Availability Size / Price Qty
543-RL-025
R&D Systems Recombinant Proteins and Enzymes
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Product Details
Citations (2)
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Reviews (1)

Recombinant Rat LIX Protein Summary

Product Specifications

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 BaF3 mouse pro‑B cells transfected with human CXCR2. The ED50 for this effect is 0.03-0.15 µg/mL.
Source
E. coli-derived rat LIX protein
Ala38-Arg125 & Ala38-Lys117
Accession #
N-terminal Sequence
Analysis
Ala38
Predicted Molecular Mass
10.1 kDa

Product Datasheets

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543-RL (with carrier)

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543-RL/CF (carrier free)

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.

543-RL

Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Reconstitution Reconstitute at 25 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

543-RL/CF

Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: LIX

LPS-induced CXC chemokine (LIX) is a chemokine originally cloned from LPS-stimulated mouse fibroblasts. Rat LIX shares approximately 74% amino acid (aa) sequence identity with mouse LIX and is likely the rat orthologue to mouse LIX. Rat LIX cDNA encodes a 130 aa residue precursor with a predicted 37 aa residue signal peptide and a 93 aa residue mature protein. Among human CXC chemokines, rat LIX is most closely related to human GCP-2 and ENA-78. Rat LIX also differs from these two human proteins by having an extended carboxy-terminus. The amino-terminal 115 residues of rat LIX shares 59% and 53% aa sequence homology with human GCP-2 and ENA-78, respectively. It is not clear if LIX should be considered an orthologue of GCP-2 or ENA-78. Yet, mouse LIX was alternatively named mouse GCP-2.

Purified recombinant rat LIX is C-terminally truncated. This is consistent with the observation that natural mouse LIX purified from fibroblasts and epithelial cells also contains multiple amino-terminal and carboxy-terminal truncated isoforms. The shorter isoforms of the natural protein were reported to be more active than the longer forms. The bioactivity of rat LIX can be mediated through CXCR2.

References
  1. Proost, P. et al. (1993) J. Immunol. 150:1000.
  2. Smith, J.B. and H.R. Herschman (1995) J. Biol. Chem. 270:16756.
  3. Rovai, L.E. et al. (1997) J. Immunol. 158:5257.
  4. Wuyts, A. et al. (1997) J. Immunol. 157:1736.
Entrez Gene IDs
20311 (Mouse); 60665 (Rat)
Alternate Names
LIX

Citations for Recombinant Rat LIX Protein

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
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  1. CXCL6-EGFR-induced Kupffer cells secrete TGF-?1 promoting hepatic stellate cell activation via the SMAD2/BRD4/C-MYC/EZH2 pathway in liver fibrosis
    Authors: X Cai, Z Li, Q Zhang, Y Qu, M Xu, X Wan, L Lu
    J. Cell. Mol. Med., 2018-08-14;0(0):.
    Species: Rat
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Rat coronaviruses infect rat alveolar type I epithelial cells and induce expression of CXC chemokines.
    Authors: Miura TA, Wang J, Holmes KV, Mason RJ
    Virology, 2007-09-05;369(2):288-98.
    Applications: ELISA Developmet

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Recombinant Rat LIX Protein
By Anonymous on 08/22/2016
Application: In vitro bioactivity in cell culture