Recombinant Rat L-Selectin/CD62L Fc Chimera Protein, CF

• Reactivity: Rt
• Applications: Bioactivity
• Format: Carrier-Free

Recombinant Rat L-Selectin/CD62L Fc Chimera Protein, CF Summary

• Details of Functionality: Measured by the ability of the immobilized protein to support the adhesion of LS180 human colorectal adenocarcinoma cells. When 5 x 10⁴ cells/well are added to Recombinant Rat L‑Selectin/CD62L Fc Chimera coated plates, adhesion is induced in a dose dependent manner after a 1 hour incubation at 37 °C. The ED₅₀ for this effect is 0.4‑2 μg/mL.
• Source: Mouse myeloma cell line, NS0-derived rat L-Selectin/CD62L protein
  

  Rat L-Selectin (Trp39-Asn332) Accession # P30836	IEGRMD	Human IgG1 (Pro100-Lys330)
  N-terminus		C-terminus

• Accession #: P30836
• N-terminal Sequence: Trp39
• Structure / Form: Disulfide-linked homodimer
• Protein/Peptide Type: Recombinant Proteins
• Gene: Sell
• Purity: >90%, by SDS-PAGE under reducing conditions and visualized by silver stain
• Endotoxin Note: <1.0 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

• Dilutions:
  • Bioactivity
• Theoretical MW: 60 kDa (monomer).
  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.
• SDS-PAGE: 90-96 kDa, reducing conditions

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 Tris-Citrate and NaCl.
• Purity: >90%, by SDS-PAGE under reducing conditions and visualized by silver stain
• Reconstitution Instructions: Reconstitute at 100 μg/mL in sterile PBS.

Notes

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

Alternate Names for Recombinant Rat L-Selectin/CD62L Fc Chimera Protein, CF

• CD62L antigen
• CD62L
• gp90-MEL
• hLHRc
• LAM1
• LAM-1
• LAM1LECAM1
• LECAM1
• LEU8
• Leu-8
• Leukocyte adhesion molecule 1
• Leukocyte surface antigen Leu-8
• Leukocyte-endothelial cell adhesion molecule 1
• LNHR
• LNHRTQ1
• LSEL
• L-Selectin
• LYAM1
• Lyam-1
• LYAM1CD62 antigen-like family member L
• Lymph node homing receptor
• lymphocyte adhesion molecule 1
• pln homing receptor
• PLNHR
• selectin L
• SELL
• TQ1

Background

L-Selectin (also known as Leukocyte Selectin, LAM-1, LECAM-1, LECCAM-1, TQ1, Leu-8, MEL-14 antigen, DREG, lymph node homing receptor, CD62L) is a member of the Selectin family of cell surface molecules which include E-Selectin and P-Selectin. All Selectins have an extracellular domain composed of an amino-terminal calcium-dependent lectin domain, an epidermal growth factor (EGF)-like domain, two to nine short consensus repeat (SCR) units, a transmembrane domain, and a cytoplasmic tail. L-Selectin expression is limited to hematopoietic cells, with most leukocytes expressing L-Selectin at some stage of differentiation. The majority of myeloid cells, B cells, and virgin T cells express L-Selectin, while only a sub-population of memory T cells and NK cells express L-Selectin. Lymphocytes and neutrophils exhibit a reversible loss of L-Selectin after cellular activation that results from endoproteolytic release of the extracellular portion of receptor from the cell surface. Cleavage of L-Selectin from the cell surface results in a high circulating level of functionally active soluble L-Selectin. All selectins bind sialytated and fucosylated oligosaccharides that are linked to glycoproteins and glycolipids. L-Selectin specifically binds to at least three different heavily glycosolylated mucin-like proteins: GlyCAM-1, CD34, and MAdCAM-1. Multiple studies indicated that L-Selectin, P-Selectin E-Selectin collaborate to mediate the initial binding of leukocytes to endothelium at sites of tissue injury and inflammation, producing the characteristic “rolling” of leukocytes along the endothelium. L-Selectin knockout mice have a 70% decrease in rolling leukocytes in exposed mesentery and have impaired neutrophil and monocyte migration into areas of inflammation. Additionally, L-Selectin knockout mice have relatively few lymphocytes present in peripheral lymph nodes and Peyer’s patches. Short-term in vivo homing experiments in L-Selectin deficient mice demonstrate that L-Selectin is involved in lymphocyte homing to Peyer’s patches and mesenteric lymph nodes in the gut. Rat and human L-Selectin share 77% amino acid sequence homology. Rat and mouse L-Selection share 83% amino acid sequence homology (1, 2).

1. Tedder, T.F. et al. (1995) FASEB Journ. 9:866.
2. McEver, R.P. et al. (1995) J. Biol. Chem. 270:11025.

Bioinformatics

• Gene Symbol: Sell
• Uniprot:
  • P30836()