Recombinant Human CD163 Protein, CF

Catalog #: 1607-CD
1 Citation Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
1607-CD-050

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Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human CD163 Protein, CF Summary

Product Specifications

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

Activity

Measured by its ability to bind Haptoglobin/Hemoglobin (Hp/Hb) complexes. Kristiansen, M. et al. (2001) Nature 409:198.

Source

Mouse myeloma cell line, NS0-derived human CD163 protein
Gly41-Ser1045, with a C-terminal 10-His tag

Accession #

CAA80543

N-terminal Sequence
Analysis

Gly41

Structure / Form

Monomer

Predicted Molecular Mass

110 kDa

SDS-PAGE

135-140 kDa, reducing conditions

Product Datasheets

1607-CD

Product Datasheet

COA

SDS

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.

1607-CD

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.

Reconstitution Calculator

Background: CD163

CD163, previously called M130 or p155, is a 130-160 kDa type I transmembrane glycoprotein that belongs to group B of the cysteine-rich scavenger receptor family (1-3). It is essential for clearance of hemoglobin-haptoglobin (Hb-Hp) complexes in the liver, spleen and circulation (4). The human CD163 contains a 41 amino acid (aa) signal sequence, a 1009 aa extracellular domain (ECD) with 9 scavenger receptor cysteine-rich (SRCR) domains, a 22 aa transmembrane segment, and a 39-84 aa cytoplasmic region (1). The third SRCR domain is crucial for calcium-dependent binding of hemoglobin/haptoglobin complexes (3). Three splice forms (isoforms 2, 3 and 4) vary within their intracellular regions (1, 5), while one isoform (# 4) also has a 34 aa insert between SRCR domains 5 and 6 within the ECD. While all are expressed, isoform 3 is the most abundant, being generally expressed on the cell surface and most active in endocytosis (5). An approximately 130 kDa soluble form of human CD163 (sCD163) is assumed to contain virtually all of the ECD, which shares 74%, 75%, 84%, 86%, 86% and 87% aa identity with mouse, rat, bovine, equine, porcine and canine CD163 ECD, respectively (6, 7). It is released from the cell surface by proteolysis after oxidative stress or inflammatory stimuli, including bacterial endotoxins and activation of the Toll-like receptors TLR2 or TLR5 (7-10). Expression of CD163 is constitutive, and induced by glucocorticoids, IL-10, IL-6 or endotoxin on circulating monocytes, tissue macrophages, and at low levels on monocyte-derived dendritic cells (1, 2, 11, 12). In addition to clearing Hb-Hp complexes, CD163 is also a scavenger receptor for free Hb (if Hp is depleted) and TWEAK (TNF-like weak inducer of apoptosis), and can function as an erythroblast adhesion receptor (4, 13-15).

References

Law, S.K.A. et al. (1993) Eur. J. Immunol. 23:2320.
Sulahian, T.H. et al. (2000) Cytokine 12:1312.
Madsen, M. et al. (2004) J. Biol. Chem. 279:51561.
Kristiansen, M. et al. (2001) Nature 409:198.
Nielsen, M.J. et al. (2006) J. Leukoc. Biol. 79:837.
Moller, H.J. et al. (2002) Blood 99:378.
Droste, A. et al. (1999) Biochem. Biophys. Res. Commun. 256:110.
Hintz, K. A. et al. (2002) J. Leukoc. Biol. 72:711.
Weaver, L.K. et al. (2006) J. Leukoc. Biol. 80:26.
Timmerman, M. and P. Hogger (2005) Free Radic. Biol. Med. 39:98.
Buechler, C. et al. (2000) J. Leukoc. Biol. 67:97.
Pulford, K.A. et al. (1989) J. Clin. Pathol. 42:414.
Schaer, D.J. et al. (2006) Blood 107:373.
Bover, L.C. et al. (2007) J. Immunol. 178:8183.
Fabriek, B.O. et al. (2007) Blood 109:5223.

Entrez Gene IDs

9332 (Human); 93671 (Mouse); 312701 (Rat)

Alternate Names

CD_antigen: CD163; CD163 molecule; CD163; GHI/61; HbSR; Hemoglobin scavenger receptor; M130; macrophage-associated antigen; MM130; RM3/1; SCARI1; scavenger receptor cysteine-rich type 1 protein M130; sCD163; Soluble CD163

Related Research Areas

Citation for Recombinant Human CD163 Protein, CF

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.

1 Citation: Showing 1 - 1