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Recombinant Human Stabilin-2 (aa 2198-2295) Protein

Bio-Techne includes R&D Systems | Catalog # 3645-S2

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Carrier Free
3645-S2-025/CF

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With Carrier
3645-S2-025

Key Product Details

Source

E. coli

Accession #

Conjugate

Unconjugated

Applications

Binding Activity

Product Specifications

Source

E. coli-derived human Stabilin-2 protein
MNHKVHM Human Stabilin
(Gly2198 - Val2295)
Accession # Q8WWQ8
6-His tag
N-terminus C-terminus

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.01 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Met

Predicted Molecular Mass

12.6 kDa

Activity

Measured by its ability to bind biotinylated Hyaluronan in a functional ELISA with an apparent KD <0.1 nM.

Formulation, Preparation and Storage

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.

Carrier: 3645-S2
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 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.
Carrier Free: 3645-S2/CF
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
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: Stabilin-2

Stabilin-2, also known as HARE (hyaluronan receptor for endocytosis) and FEEL-2 (fasciclin, EGF-like, laminin type EGF-like, and link domain containing scavenger receptor 2), is a type I transmembrane multi-domain protein that is the closest homolog of stabilin-1 (1, 2). It is a scavenger receptor that is expressed on sinusoidal endothelial cells of liver, spleen, and lymph node (1, 2). Its 2439 amino acid (aa) extracellular domain contains seven fasciclin domains, multiple EGF-like and laminin type EGF-like domains, and a link domain related to molecules of the TSG-6 superfamily (3). The 72 aa cytoplasmic tail of Stabilin-2 contains a motif that allows the AP2 classical cargo adaptor to direct cargo into clathrin-coated pits (4). As a recycling receptor, stabilin-2 cycles from the membrane to clathrin-coated pits each 10 - 15 minutes, with about two thirds of the protein found within the endocytic system at any one time (4). The link domain binds and mediates the systemic clearance of hyaluronan (HA) (2 - 6). Within the link domain (aa 2198 - 2295), human stabilin-2 shares 86% and 89% aa identity with mouse and rat stabilin-2, respectively. Total human HA is about 15 grams, of which about 5 grams are cleared each day (5). Stabilin-2 also mediates the endocytosis of chondroitin and chondroitin sulfate, advanced glycosylation end-product (AGE), collagen N-terminal propeptides and acetylated LDL (4 - 7). Human stabilin-2 mRNA encodes a 2251 aa, 315 kDa protein that produces an isoform of 190 kDa through proteolytic cleavage (2, 6). The 190 kDa form lacks some N-terminal fasciclin and EGF-like domains, but shows similar activities when compared with the 315 kDa form (2, 6).

References

  1. Politz, O. et al. (2002) Biochem. J. 362:155.
  2. Zhou, B. et al. (2003) Glycobiology 13:339.
  3. Blundell, C.D. et al. (2005) J. Biol. Chem. 280:18189.
  4. Hansen, B. et al. (2005) Exp. Cell Res. 303:160.
  5. Harris, E.N. et al. (2004) J. Biol. Chem. 279:36201.
  6. Harris, E.N. et al. (2007) J. Biol. Chem. 282:2785.
  7. Tamura, Y. et al. (2003) J. Biol. Chem. 278:12613.

Alternate Names

FEEL-2, FELE-2, FELL-2, FEX2, HARE, STAB2, Stabilin2

Entrez Gene IDs

55576 (Human); 192188 (Mouse); 282580 (Rat)

Gene Symbol

STAB2

UniProt

Additional Stabilin-2 Products

Product Documents for Recombinant Human Stabilin-2 (aa 2198-2295) Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human Stabilin-2 (aa 2198-2295) Protein

For research use only

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