Complement Factor D/CFP Protein, Human (HEK293, His)

Properdin is a key regulator in the alternative pathway of complement activation, enhancing stability by binding to the C3 and C5 convertase complexes. It prevents CFI-CFH-mediated degradation of C3b to form plasma dimers, trimers, or tetramers. Complement Factor D/CFP Protein, Human (HEK293, His) is the recombinant human-derived Complement Factor D/CFP protein, expressed by HEK293, with C-His 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.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

Properdin is a key regulator in the alternative pathway of complement activation, enhancing stability by binding to the C3 and C5 convertase complexes. It prevents CFI-CFH-mediated degradation of C3b to form plasma dimers, trimers, or tetramers. Complement Factor D/CFP Protein, Human (HEK293, His) is the recombinant human-derived Complement Factor D/CFP protein, expressed by HEK293, with C-His labeled tag.

Background

Properdin is a crucial positive regulator within the alternate pathway (AP) of complement activation, playing a pivotal role in enhancing the stability of the C3- and C5-convertase enzyme complexes. By binding to these complexes, Properdin inhibits the CFI-CFH mediated degradation of Complement C3 beta chain (C3b). In its plasma form, Properdin forms dimers, trimers, or tetramers in specific proportions. Notably, Properdin interacts with the pro-C3-convertase enzyme complex (C3b-Bb), consisting of Complement C3 beta chain (C3b) and the Complement factor B Bb fragment (Bb), through its TSP type-1 5 domain. This interaction is pivotal for stabilizing the complex, transforming it into the active C3-convertase enzyme complex (C3b-Bb-FP). Furthermore, Properdin interacts directly with C3b and Complement factor B (CFB), highlighting its multifaceted role in complement activation and regulation.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag C-His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • CFP (D28-L469)
      Accession # P27918-1
    • His
    • C-term
  • Protein Length

    Full Length of Isoform-1

  • Synonyms

    CFP; Complement Factor Properdin, Isoform CRA_c; Prev. PFC; Alternative Protein CFP; Complement Factor P; PROPERDIN; Properdin P Factor, Complement; BFD; Properdin; PFD; CDNA FLJ16673 Fis, Clone THYMU3003403, Highly Similar To Properdin; Complement Factor

  • AA Sequence

    DPVLCFTQYEESSGKCKGLLGGGVSVEDCCLNTAFAYQKRSGGLCQPCRSPRWSLWSTWAPCSVTCSEGSQLRYRRCVGWNGQCSGKVAPGTLEWQLQACEDQQCCPEMGGWSGWGPWEPCSVTCSKGTRTRRRACNHPAPKCGGHCPGQAQESEACDTQQVCPTHGAWATWGPWTPCSASCHGGPHEPKETRSRKCSAPEPSQKPPGKPCPGLAYEQRRCTGLPPCPVAGGWGPWGPVSPCPVTCGLGQTMEQRTCNHPVPQHGGPFCAGDATRTHICNTAVPCPVDGEWDSWGEWSPCIRRNMKSISCQEIPGQQSRGRTCRGRKFDGHRCAGQQQDIRHCYSIQHCPLKGSWSEWSTWGLCMPPCGPNPTRARQRLCTPLLPKYPPTVSMVEGQGEKNVTFWGRPLPRCEELQGQKLVVEEKRPCLHVPACKDPEEEEL

  • Predicted Molecular Mass

    50.7 kDa

  • Molecular Weight

    Approximately 55 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • Structure/Form

    Monomer

  • Purity

    ≥ 90%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

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. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

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

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

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

Concentration (start) Concentration (start)
×
Volume (start) Volume (start)
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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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