1. Recombinant Proteins
  2. Cytokines and Growth Factors Animal-free Recombinant Proteins
  3. Neurotrophic Factors
  4. CNTF
  5. Animal-Free CNTF Protein, Human (His)

Animal-Free CNTF Protein, Human (His)

Cat. No.: HY-P72943AF
COA Handling Instructions

CNTF is a pluripotent neurotrophic factor, belonging to the IL-6 cytokine family. CNTF could protect retinal cone and rod photoreceptors. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons. Animal-Free CNTF Protein, Human (His) is produced by E. coli (M1-M200) with C-terminal His-tag.

Animal-free recombinant proteins offer high consistency and stability, whithout using or contacting of any animal-derived materials and reagents.

For research use only. We do not sell to patients.

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Size Price Stock Quantity
Free Sample   Apply now
2 μg $55 In-stock
10 μg $155 In-stock
50 μg $430 In-stock
100 μg   Get quote  

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Top Publications Citing Use of Products
  • Biological Activity

  • Technical Parameters

  • Properties

  • Documentation

  • References

Description

CNTF is a pluripotent neurotrophic factor, belonging to the IL-6 cytokine family[1]. CNTF could protect retinal cone and rod photoreceptors[2]. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons[3]. Animal-Free CNTF Protein, Human (His) is produced by E. coli (M1-M200) with C-terminal His-tag.

Background

Ciliary Neurotrophic Factor (CNTF) belongs to the IL-6 cytokine family. IL-6, IL-11 and CNTF are associated with cytokine trans signaling. CNTF shows a low affinity interaction with IL-6 receptor subunit alpha (IL-6Rα), leading to the formation and activation of the IL-6Rβ/gp130/LIFR signaling receptor complex[1]. CNTF is also an extracellular signaling protein in the neuroretinal and the interphotoreceptor matrix, which is associated with the membranes of the RPE, Muller and photoreceptor cells[2]. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons. Because it promotes differentiation and maturation of oligodendrocyte precursor cells to oligodendrocytes under in vitro conditions and thus improves remyelination. Importantly, it also increases the survival of mature oligodendrocytes[3]. The similarity of human CNTF protein sequences to mice and rats was 81.82% and 84.0%, respectively.

In Vitro

CNTF (human; 20 ng/mL; 3 d) significantly inhibits the activity of choline acetyltransferase (ChAT) in mesencephalic cultures[4].

Biological Activity

Measure by its ability to induce proliferation in TF-1 cells. The ED50 for this effect is <0.15 µg/mL.

Species

Human

Source

E. coli

Tag

C-His;C-His

Accession

P26441 (M1-M200)

Gene ID
Molecular Construction
N-term
CNTF (M1-M200)
Accession # P26441
His
C-term
Synonyms
Ciliary neurotrophic factor; CNTF
AA Sequence

MAFTEHSPLTPHRRDLCSRSIWLARKIRSDLTALTESYVKHQGLNKNINLDSADGMPVASTDQWSELTEAERLQENLQAYRTFHVLLARLLEDQQVHFTPTEGDFHQAIHTLLLQVAAFAYQIEELMILLEYKIPRNEADGMPINVGDGGLFEKKLWGLKVLQELSQWTVRSIHDLRFISSHQTGIPARGSHYIANNKKM

Molecular Weight

Approximately 23.74 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE.

Appearance

Lyophilized powder.

Formulation

Lyophilized from a solution containing 1X PBS, pH 7.4, trehalose.

Endotoxin Level

<0.01 EU per 1 μg of the protein by the 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. 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.

Documentation
References

Animal-Free CNTF Protein, Human (His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

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

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

The dilution calculator equation

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

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

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

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Product Name:
Animal-Free CNTF Protein, Human (His)
Cat. No.:
HY-P72943AF
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