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CD163 Protein, Human (HEK293, His-Avi)

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The CD163 protein is an acute-phase regulatory receptor that clears hemoglobin/haptoglobin complexes through endocytosis by macrophages, protecting tissues from potential oxidative damage. In addition to iron uptake, CD163 also exhibits calcium- and pH-dependent binding preferences, with higher affinity for the hemoglobin/haptoglobin complex of the HP*1F phenotype. CD163 Protein, Human (HEK293, His-Avi) is the recombinant human-derived CD163 protein, expressed by HEK293 , with C-His, C-Avi labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: HEK293
  • Storage:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • CD163 Protein, Human (HEK293, His-Avi) Product Image
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To place orders, for customer services and technical support, please contact: MedChemExpress USA

Tel: 609-228-6898 E-mail: [email protected] [email protected]

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To place orders, for customer services and technical support, please contact:

609-228-6898
[email protected] [email protected]
Find Your Local Distributor Your local distributor: Hycultec GmbHHycultec
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
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Biological Activity

Description

The CD163 protein is an acute-phase regulatory receptor that clears hemoglobin/haptoglobin complexes through endocytosis by macrophages, protecting tissues from potential oxidative damage. In addition to iron uptake, CD163 also exhibits calcium- and pH-dependent binding preferences, with higher affinity for the hemoglobin/haptoglobin complex of the HP*1F phenotype. CD163 Protein, Human (HEK293, His-Avi) is the recombinant human-derived CD163 protein, expressed by HEK293 , with C-His, C-Avi labeled tag.

Background

CD163 is an acute phase-regulated receptor crucially involved in the clearance and endocytosis of hemoglobin/haptoglobin complexes by macrophages, thereby safeguarding tissues from potential oxidative damage caused by free hemoglobin. Beyond its role in iron uptake and recycling via endocytosis of hemoglobin/haptoglobin, CD163 binds to these complexes in a calcium-dependent and pH-dependent manner. Notably, it exhibits a higher affinity for complexes of hemoglobin and multimeric haptoglobin of HP*1F phenotype compared to those of hemoglobin and dimeric haptoglobin of HP*1S phenotype. CD163 induces a cascade of intracellular signals involving tyrosine kinase-dependent calcium mobilization, inositol triphosphate production, and the secretion of IL6 and CSF1. Isoform 3, in particular, demonstrates enhanced ligand endocytosis and surface expression when expressed in cells. The shedding of CD163 produces a soluble form (sCD163) with potential anti-inflammatory properties, serving as a valuable diagnostic parameter for monitoring macrophage activation in inflammatory conditions.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag C-Avi;C-8*His
  • Accession

    Q86VB7-1 (S42-S1045)

  • Gene ID
    9332  [NCBI]
  • Molecular Construction
    • N-term
    • CD163 (S42-S1045)
      Accession # Q86VB7-1
    • 8*His-Avi
    • C-term
  • Protein Length

    Partial

  • Synonyms

    CD163; MM130; CD163 Molecule; Hemoglobin Scavenger Receptor; M130; CD163 Antigen; Scavenger Receptor Cysteine-Rich Type 1 Protein M130; Macrophage-Associated Antigen; SCARI1

  • AA Sequence

    SSLGGTDKELRLVDGENKCSGRVEVKVQEEWGTVCNNGWSMEAVSVICNQLGCPTAIKAPGWANSSAGSGRIWMDHVSCRGNESALWDCKHDGWGKHSNCTHQQDAGVTCSDGSNLEMRLTRGGNMCSGRIEIKFQGRWGTVCDDNFNIDHASVICRQLECGSAVSFSGSSNFGEGSGPIWFDDLICNGNESALWNCKHQGWGKHNCDHAEDAGVICSKGADLSLRLVDGVTECSGRLEVRFQGEWGTICDDGWDSYDAAVACKQLGCPTAVTAIGRVNASKGFGHIWLDSVSCQGHEPAIWQCKHHEWGKHYCNHNEDAGVTCSDGSDLELRLRGGGSRCAGTVEVEIQRLLGKVCDRGWGLKEADVVCRQLGCGSALKTSYQVYSKIQATNTWLFLSSCNGNETSLWDCKNWQWGGLTCDHYEEAKITCSAHREPRLVGGDIPCSGRVEVKHGDTWGSICDSDFSLEAASVLCRELQCGTVVSILGGAHFGEGNGQIWAEEFQCEGHESHLSLCPVAPRPEGTCSHSRDVGVVCSRYTEIRLVNGKTPCEGRVELKTLGAWGSLCNSHWDIEDAHVLCQQLKCGVALSTPGGARFGKGNGQIWRHMFHCTGTEQHMGDCPVTALGASLCPSEQVASVICSGNQSQTLSSCNSSSLGPTRPTIPEESAVACIESGQLRLVNGGGRCAGRVEIYHEGSWGTICDDSWDLSDAHVVCRQLGCGEAINATGSAHFGEGTGPIWLDEMKCNGKESRIWQCHSHGWGQQNCRHKEDAGVICSEFMSLRLTSEASREACAGRLEVFYNGAWGTVGKSSMSETTVGVVCRQLGCADKGKINPASLDKAMSIPMWVDNVQCPKGPDTLWQCPSSPWEKRLASPSEETWITCDNKIRLQEGPTSCSGRVEIWHGGSWGTVCDDSWDLDDAQVVCQQLGCGPALKAFKEAEFGQGTGPIWLNEVKCKGNESSLWDCPARRWGHSECGHKEDAAVNCTDISVQKTPQKATTGRS

  • Predicted Molecular Mass

    111.4 kDa

  • Molecular Weight

    Approximately 115-130 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • Purity

    ≥ 95%, as determined by Bis-Tris PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4, 8% trehalose.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

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Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated CTLL-2 mouse cytotoxic T cells. The ED50 this effect is 0.8023 μg/ml, corresponding to a specific activity is 1246.42 units/mg.

Assay Types
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