1. Recombinant Proteins
  2. Cytokines and Growth Factors
  3. Neurotrophic Factors
  4. CNTF
  5. CNTF Protein, Human (HEK293)

CNTF Protein, Human (HEK293)

Cat. No.: HY-P7145
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. CNTF Protein, Human (HEK293) is produced by HEK293 cells (M1-M200) with tag free.

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

Protein Expression Service

Size Price Stock Quantity
Free Sample   Apply now
2 μg $35 In-stock
10 μg $68 In-stock
50 μg $190 In-stock
100 μg $320 In-stock
> 100 μg   Get quote  

* Please select Quantity before adding items.

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]. CNTF Protein, Human (HEK293) is produced by HEK293 cells (M1-M200) with tag free.

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

Measured in a cell proliferation assay using TF 1 human erythroleukemic cells. The ED50 for this effect is 0.0890-0.3240 μg/mL, corresponding to a specific activity of > 3086.4 units/mg.

  • Measured in a cell proliferation assay using TF 1 human erythroleukemic cells. The ED50 for this effect is 0.0890-0.3240 μg/mL, corresponding to a specific activity of > 3086.4 units/mg.
Species

Human

Source

HEK293

Tag

Tag Free

Accession

P26441 (M1-M200)

Gene ID
Molecular Construction
N-term
CNTF (M1-M200)
Accession # P26441
C-term
Synonyms
rHuCNTF; Ciliary Neurotrophic Factor
AA Sequence

MAFTEHSPLTPHRRDLCSRSIWLARKIRSDLTALTESYVKHQGLNKNINLDSADGMPVASTDQWSELTEAERLQENLQAYRTFHVLLARLLEDQQVHFTPTEGDFHQAIHTLLLQVAAFAYQIEELMILLEYKIPRNEADGMPINVGDGGLFEKKLWGLKVLQELSQWTVRSIHDLRFISSHQTGIPARGSHYIANNKKM

Molecular Weight

22-28 kDa

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

Lyophilized powder.

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS or 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. 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

CNTF Protein, Human (HEK293) 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

Your Recently Viewed Products:

Inquiry Online

Your information is safe with us. * Required Fields.

Product Name

 

Salutation

Applicant Name *

 

Email Address *

Phone Number *

 

Organization Name *

Department *

 

Requested quantity *

Country or Region *

     

Remarks

Bulk Inquiry

Inquiry Information

Product Name:
CNTF Protein, Human (HEK293)
Cat. No.:
HY-P7145
Quantity:
MCE Japan Authorized Agent: