MIF Protein, Human (His)

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The MIF protein is a pro-inflammatory cytokine that is critical for the innate immune response against bacterial pathogens. Its presence at sites of inflammation suggests a role in modulating macrophage function to promote host defense. MIF Protein, Human (His) is the recombinant human-derived MIF protein, expressed by E. coli , with N-6*His labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: E. coli
  • 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

The MIF protein is a pro-inflammatory cytokine that is critical for the innate immune response against bacterial pathogens. Its presence at sites of inflammation suggests a role in modulating macrophage function to promote host defense. MIF Protein, Human (His) is the recombinant human-derived MIF protein, expressed by E. coli , with N-6*His labeled tag.

Background

MIF Protein is a pro-inflammatory cytokine that plays a crucial role in the innate immune response against bacterial pathogens. Its expression at sites of inflammation suggests its involvement in regulating macrophage function in host defense. MIF counteracts the anti-inflammatory effects of glucocorticoids. Although MIF has phenylpyruvate tautomerase and dopachrome tautomerase activity in vitro, the physiological substrate of MIF is still unknown. It remains unclear whether the tautomerase activity is relevant to its cytokine activity.

Verified Bioactivity

Measured by its ability to inhibit THP-1 human acute monocyte migration. The ED50 this effect is 2.318 ng/mL, corresponding to a specific activity is 4.314×105 U/mg.

Technical Parameters

  • Species Human
  • Source E. coli
  • Tag N-6*His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • 6*His
    • MIF (M1-A115)
      Accession # P14174
    • C-term
  • Protein Length

    Full Length

  • Synonyms

    MIF; L-Dopachrome Isomerase; Prev. GLIF; Glycosylation-Inhibiting Factor; Phenylpyruvate Tautomerase; MMIF; GIF; Epididymis Secretory Sperm Binding Protein; L-Dopachrome Tautomerase; Macrophage Migration Inhibitory Factor; Macrophage Migration Inhibitory

  • AA Sequence

    MPMFIVNTNVPRASVPDGFLSELTQQLAQATGKPPQYIAVHVVPDQLMAFGGSSEPCALCSLHSIGKIGGAQNRSYSKLLCGLLAERLRISPDRVYINYYDMNAANVGWNNSTFA

  • Predicted Molecular Mass

    13.3 kDa

  • Molecular Weight

    Approximately 12 kDa, based on SDS-PAGE under reducing conditions.

  • Purity

    ≥ 95%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of 20 mM PB, 150 mM NaCl, pH 7.4.

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)

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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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