MASP2 Protein, Human (His)

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MASP2 Protein, a serum protease, critically activates the complement system by auto-catalytically cleaving and subsequently cleaving C2 and C4. This process leads to the activation of C3 and the formation of C3 convertase, essential for the complement cascade. MASP2 Protein, Human (His) is the recombinant human-derived MASP2 protein, expressed by E. coli , with C-His labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: E. coli
  • Storage:
    Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

MASP2 Protein, a serum protease, critically activates the complement system by auto-catalytically cleaving and subsequently cleaving C2 and C4. This process leads to the activation of C3 and the formation of C3 convertase, essential for the complement cascade. MASP2 Protein, Human (His) is the recombinant human-derived MASP2 protein, expressed by E. coli , with C-His labeled tag.

Background

MASP2 is a serum protease that plays a crucial role in the activation of the complement system through mannose-binding lectin. Once activated by auto-catalytic cleavage, MASP2 cleaves C2 and C4, resulting in their activation and the subsequent formation of C3 convertase, a pivotal step in the complement cascade.

Verified Bioactivity

1. Immobilized Human MASP2 at 0.2 μg/mL (100μL/Well). Dose response curve for Anti-MASP2 Antibody with the EC50 of 3.0-5.3 ng/mL determined by ELISA.
2. Immobilized Human MASP2 at 0.5 μg/mL (100μL/Well). Dose response curve for Anti-MASP2 Antibody with the EC50 of 1.2-5.3 ng/mL determined by ELISA.
3. Measured by its ability to cleave a colorimetric peptide substrate, N-carbobenzyloxy-LysThioBenzyl ester (Z-Lys-SBzl), in the presence of 5,5'Dithio-bis. The specific activity is ≥3000 pmol/min/µg.
4. Immobilized Human MASP2, His Tag at 0.5 μg/mL (100 μL/Well). Dose response curve for Narsoplimab, hFc Tag with the EC50 of 1.0-10.0 ng/mL determined by ELISA.

Technical Parameters

  • Species Human
  • Source E. coli
  • Tag C-6*His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • MASP2 (G288-F686)
      Accession # O00187-1
    • 6*His
    • C-term
  • Protein Length

    Partial

  • Synonyms

    MASP2; Mannan-Binding Lectin Serine Protease 1 Pseudogene 1; Prev. MASP1P1; Mannose-Binding Lectin Associated Protein 19; Mannan-Binding Lectin Serine Protease 2; MBL-Associated Serine Protease 2; Mannose-Binding Protein-Associated Serine Protease 2; MASP

  • AA Sequence

    GWKIHYTSTAQPCPYPMAPPNGHVSPVQAKYILKDSFSIFCETGYELLQGHLPLKSFTAVCQKDGSWDRPMPACSIVDCGPPDDLPSGRVEYITGPGVTTYKAVIQYSCEETFYTMKVNDGKYVCEADGFWTSSKGEKSLPVCEPVCGLSARTTGGRIYGGQKAKPGDFPWQVLILGGTTAAGALLYDNWVLTAAHAVYEQKHDASALDIRMGTLKRLSPHYTQAWSEAVFIHEGYTHDAGFDNDIALIKLNNKVVINSNITPICLPRKEAESFMRTDDIGTASGWGLTQRGFLARNLMYVDIPIVDHQKCTAAYEKPPYPRGSVTANMLCAGLESGGKDSCRGDSGGALVFLDSETERWFVGGIVSWGSMNCGEAGQYGVYTKVINYIPWIENIISDF

  • Predicted Molecular Mass

    46.9 kDa

  • Molecular Weight

    Approximately 18 kDa & 25-30 kDa, based on SDS-PAGE under reducing conditions.

  • Purity

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

Product Properties

Appearance

Solution

Formulation

1.Supplied as a 0.22 μm filtered solution of 50 mM Tris, 100-200 mM NaCl, pH 9.0.
2.Supplied as a 0.22 μm filtered solution of 20 mM Tris, 200 mM NaCl, pH 9.0.
3.Supplied as a 0.22 μm filtered solution of 20 mM Tris, 200 mM NaCl, pH 9.0, 8% trehalose.
Please refer to the lot-specific COA for specific buffer information.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Storage & Stability

Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping

Shipping with dry ice.

Calculators

Reconstitution Calculator

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

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=
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Desired Reconstitution Concentration Desired Reconstitution Concentration
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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