Skip to main content

Recombinant Mouse ASGR1/ASGPR1 Protein

Catalog # 2755-AS | R&D Systems, Inc. a Bio-Techne Brand
Catalog #
Availability
Size / Price
Qty
Loading...
Carrier Free
2755-AS-050/CF

Catalog #
Availability
Size / Price
Qty
With Carrier
2755-AS-050

Key Product Details

Source

NS0

Accession #

Structure / Form

Monomer

Conjugate

Unconjugated

Applications

Binding Activity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse ASGR1/ASGPR1 protein
Ser60-Asn284, with an N-terminal 9-His tag

Purity

>90%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

His

Predicted Molecular Mass

27 kDa

SDS-PAGE

38-40 kDa, reducing conditions

Activity

Measured by its binding ability in a functional ELISA.
rmASGPR1 immobilized at 2.5 µg/mL (100 µL/well) on a Mouse Anti-polyHistidine Monoclonal Antibody (Catalog # MAB050) coated plate can bind biotinylated beta-Gal-NAc-PAA with a linear range of 2-150 ng/mL.

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: 2755-AS
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 250 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: 2755-AS/CF
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 250 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: ASGR1/ASGPR1

The mouse asialoglycoprotein receptor (ASGP-R) is an endocytic recycling receptor that belongs to the long-form subfamily of the C-type/Ca++-dependent lectin family (1 - 3). It is a complex of two noncovalently-linked subunits, a major 42 kDa glycoprotein (ASGPR1) and a minor 51 kDa glycoprotein (ASGR2). The major mouse ASGP-R subunit, ASGPR1, is synthesized as a 284 amino acid (aa) type II transmembrane (TM) protein that contains a 39 aa cytoplasmic region, a 21 aa TM segment, and a 224 aa extracellular domain (ECD) (4 - 6). The ECD contains two important structural regions. The first is a stalk region of 56 aa (aa’s # 59 - 117) that contributes to noncovalent oligomerization. The second is a 118 aa, carbohydrate-binding, Ca++-dependent C-type lectin domain (aa’s 160 - 277) that is unusually stabilized by three Ca++ ions (3, 5). There are two potential alternate splice forms for ASGPR1. Both are TM and show a deletion of the C-type lectin domain. One is 113 aa in length and shows a deletion of aa’s # 114 - 284 (7). The second is 132 aa in length and shows a deletion of aa’s 118 - 146 and aa’s 162 - 284 (8). Mouse ASGPR1 ECD is 89% and 79% aa identical to the ASGPR1 ECD in rat and human, respectively. The minor mouse ASGP-R subunit, ASGR2, is also a C-type lectin that shares the same structural organization as ASGR-1. It is 301 aa in length and has two 45 kDa and 51 kDa differentially-glycosylated isoforms (4, 6, 9). The ECD of ASGR2 is 50% aa identical to the ECD of ASGPR1. Although ASGPR1 and 2 can be expressed individually, a fully functional and stable ASGP-R requires simultaneous expression of both subunits (10 - 12). The stoichiometry of a functional ASGP-R is suggested to be either a 2:2, 3:1 or 3:2 ratio of ASGPR1:ASGR2 (13, 14). ASGPR1 is reported to bind Gal (nonreducing), GalNAc, and sialic acid alpha2,6GalNAc (3, 15, 16). This is generally in the context of triantennary or tetraantennary configurations (2).

References

  1. Stockert, R. J. (1995) Physiol. Rev. 75:591.
  2. Weigel, P.H. and J.H.N. Yik (2002) Biochim. Biophys. Acta 1572:341.
  3. Meier, M. et al. (2000) J. Mol. Biol. 300:857.
  4. Takezawa, R. et al. (1993) Biochim. Biophys. Acta 1172 :220.
  5. Monroe, R.S. and B.E. Huber (1994) Gene 148:237.
  6. Sanford, J.P. et al. (1988) DNA 7:721.
  7. Heath, P. (2005) GenBank Accession #:Q5NCV2
  8. Heath, P. (2005) GenBank Accession #:Q5NCV1.
  9. Sanford, J.P. and D. Doyle (1990) Biochim. Biophys. Acta 1087:259.
  10. Braun, J.R. et al. (1996) J. Biol. Chem. 271:21160.
  11. Ishibashi, S. et al. (1994) J. Biol. Chem. 269:27803.
  12. Tozawa, R. et al. (2001) J. Biol. Chem. 276:12624.
  13. Bider, M.D. et al. (1996) J. Biol. Chem. 271:31996.
  14. Lodish, H. (1991) Trends Biochem. Sci. 16:374.
  15. Westerlind, U. et al. (2004) Glyconj. J. 21:227.
  16. Park, E.I. et al. (2005) Proc. Natl. Acad. Sci. USA 102:17125.

Long Name

Asialoglycoprotein Receptor 1

Alternate Names

ASGPR1, CLEC4H1, MHL1, RHL1

Entrez Gene IDs

432 (Human); 11889 (Mouse); 24210 (Rat)

Gene Symbol

ASGR1

UniProt

Product Documents for Recombinant Mouse ASGR1/ASGPR1 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 Mouse ASGR1/ASGPR1 Protein

For research use only

FAQs for Recombinant Mouse ASGR1/ASGPR1 Protein

Showing  1 - 1 of 1 FAQ Showing All
  • Q: This protein datasheet indicates I need to use a cross-linking antibody, Catalog # MAB050, for biological activity. What is this antibody and is it really necessary?

    A: The antibody is directed against a 6x histidine repeat and is recommended for use as a cross-linker of proteins with 6x his-tag. Crosslinking is often used for proteins that require receptor trimerization and can result greater biological activity. R&D Systems Quality Control tests the performance of these proteins in the presence of the cross-linking antibody. Therefore, it is necessary to use this antibody when trying to achieve the same level of specific activity described in the datasheet.

Showing  1 - 1 of 1 FAQ Showing All

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

÷
=
Loading...
Setting the standard in quality research reagents