CNTF recombinant protein

CNTF

Cat. Num. AAA516761

• Gene Names: CNTF; HCNTF
• Applications: Cell Assay
• Synonyms: CNTF; Ciliary neutrophic factor; CNTF recombinant protein

• Host: E Coli
• Form/Format: Lyophilized from a 0.2 um filtered PBS pH7.5

• Applicable Applications for CNTF recombinant protein: Cell Assay
• Species: Human
• Endotoxin Level: <1.0EU/ug of recombinant protein as determined by the LAL method.
• Reconstitution: A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1mg/ml. This solution can then be diluted into other buffers.
• Preparation and Storage: The lyophilized protein is stable for at least one year from date of receipt at -70 degree C. Upon reconstitution, this cytokine can be stored in working aliquots at 2 degree -8 degree C for one month, or at -20 degree C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.

Activity

(Sample Cell Assay Data: The ED50 as determined by the dose-dependent proliferation of human erythroleukemic cell line was found to be )

SDS-Page

(Purity: Recombinant Human CNTF resolved on a 15% SDS-PAGE gel under reducing conditions and stained with Coomassie Brilliant Blue G-250.)

Related Product Information for CNTF recombinant protein

Recombinant Human CNTF was expressed in E Coli cells. The protein accession number is P26441
CNTF is found predominantly in peripheral nerve tissues. The main source appears to be myelin-associated Schwann cells in peripheral nerves and astrocytes in the central nervous system. CNTF is present at very high concentrations within intraocular tissues that contain the same muscle cells innervated by ciliary ganglionic neurons in vivo. CNTF receptors are expressed exclusively in the nervous system and skeletal muscle. The alpha subunit of the receptor is anchored to the cell membrane by a glycosyl-phosphatidylinositol linkage. The other receptor subunit, known as gp130, is also a component of receptors for LIF, Oncostatin M, IL-6 and IL-11, and seems to be involved also in signaling for CT-1. CNTF induces the expression of genes encoding hepatic acute phase proteins such as Haptoglobin, Alpha-1-antichymotrypsin, Alpha-2-Macroglobulin and Beta-fibrinogen in human hepatoma cells (HepG2) and in primary rat hepatocytes with a time course and dose-response comparable with that of IL-6.

Product Categories/Family for CNTF recombinant protein

Growth Factors; Cancer

NCBI and Uniprot Product Information

• NCBI GI #: 4758020
• NCBI GeneID: 1270
• NCBI Accession #: NP_000605.1
• NCBI GenBank Nucleotide #: NM_000614.3
• UniProt Accession #: P26441; B2RAB2
• Molecular Weight: 22,931 Da
• NCBI Official Full Name: ciliary neurotrophic factor
• NCBI Official Synonym Full Names: ciliary neurotrophic factor
• NCBI Official Symbol: CNTF
• NCBI Official Synonym Symbols: HCNTF
• NCBI Protein Information: ciliary neurotrophic factor
• UniProt Protein Name: Ciliary neurotrophic factor
• Protein Family: Ciliary neurotrophic factor
• UniProt Gene Name: CNTF
• UniProt Synonym Gene Names: CNTF
• UniProt Entry Name: CNTF_HUMAN

NCBI Description

The protein encoded by this gene is a polypeptide hormone whose actions appear to be restricted to the nervous system where it promotes neurotransmitter synthesis and neurite outgrowth in certain neuronal populations. The protein is a potent survival factor for neurons and oligodendrocytes and may be relevant in reducing tissue destruction during inflammatory attacks. A mutation in this gene, which results in aberrant splicing, leads to ciliary neurotrophic factor deficiency, but this phenotype is not causally related to neurologic disease. A read-through transcript variant composed of the upstream ZFP91 gene and CNTF sequence has been identified, but it is thought to be non-coding. Read-through transcription of ZFP91 and CNTF has also been observed in mouse. [provided by RefSeq, Oct 2010]

Uniprot Description

CNTF: CNTF is a survival factor for various neuronal cell types. Seems to prevent the degeneration of motor axons after axotomy. Belongs to the CNTF family.

Chromosomal Location of Human Ortholog: 11q12.2

Cellular Component: extracellular space; cytoplasm

Molecular Function: interleukin-6 receptor binding; growth factor activity; ciliary neurotrophic factor receptor binding

Biological Process: negative regulation of photoreceptor cell differentiation; positive regulation of cell proliferation; regulation of retinal cell programmed cell death; neuron development; negative regulation of neuron apoptosis; signal transduction; muscle morphogenesis; growth; positive regulation of tyrosine phosphorylation of Stat3 protein