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Recombinant Human XCL1/Lymphotactin Protein

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Recombinant Human XCL1/Lymphotactin Protein Summary

Details of Functionality
Measured by its ability to chemoattract BaF3 mouse pro‑B cells transfected with human XCR1. The ED50 for this effect is 0.0800-0.500 µg/mL.
Source
E. coli-derived human XCL1/Lymphotactin protein
Val22-Gly114, with an N-terminal Met
Accession #
N-terminal Sequence
Met
Protein/Peptide Type
Recombinant Proteins
Gene
XCL1
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
10.4 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Publications
Read Publications using
695-LT in the following applications:

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human XCL1/Lymphotactin Protein

  • ATAC
  • ATACSmall-inducible cytokine C1
  • C motif chemokine 1
  • chemokine (C motif) ligand 1
  • Cytokine SCM-1
  • LPTNSCM-1-alpha
  • LTNXC chemokine ligand 1
  • Lymphotactin
  • lymphotaxin
  • SCM-1 alpha
  • SCM-1
  • SCM1A
  • SCM-1a
  • SCYC1SCM1
  • single cysteine motif 1a
  • small inducible cytokine subfamily C, member 1 (lymphotactin)
  • XCL1

Background

Human lymphotactin (Lptn)/XCL1 (also named human SCM-1 alpha and ATAC) and its mouse homologue belong to the C or gamma  subfamily of chemokines. The C chemokines lack two (the 1st and 3rd ) of the four invariant cysteine residues normally found in the CC and CXC chemokines and have an extended carboxy terminus. Human lymphotactin encodes a 114 amino acid residue precursor protein with a 21 amino acid residue predicted signal peptide. The expression of lymphotactin is abundant in some activated T cells such as activated CD8+ T cells and other class I MHC restricted T cells. Lptn expression is absent in CD4+ T cells. Human and mouse Lptn share approximately 60% amino acid sequence homology. The gene for lymphotactin has been mapped to chromosome 1 in both human and mouse. Recombinant human lymphotactin has been shown to have chemotactic activity for lymphocytes and NK cells. The orphan receptor GPR5 has been reported to be the specific receptor for Lptn.

  1. Kennedy, J. et al. (1995) J. Immunol. 155:203.
  2. Zlotnik, A. et al. (1999) Critical Reviews in Immunol. 19:1.

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Bioinformatics

Gene Symbol XCL1
Uniprot