Product Description for Interferon-alpha B2 (IFN-a8) (mPEG-ALD)
Properties for Interferon-alpha B2 (IFN-a8) (mPEG-ALD)
|Product Category||Proteins & Growth Factors|
|Synonyms||IFN alpha, Interferone alpha|
|Molecular weight||31 kDa|
|PDF datasheet||View Datasheet|
|Manufacturer||Acris Antibodies GmbH|
|Material safety datasheet||MSDS for Proteins (de)|
|Purity||> 98 % Ni-NTA chromatography. Greater than 95% (SDS PAGE analyzed).|
|Background||Clusterin also names Apoliprotein J is a 75-80 kD disulfide-linked heterodimeric protein containing about 30% of N-linked carbohydrate rich in sialic acid but truncated forms targeted to the nucleus have also been identified.
The precursor polypeptide chain is cleaved proteolytically to remove the 22-mer secretory signal peptide and subsequently between residues 227/228 to generate the alpha and beta chains. These are assembled in anti-parallel to give a heterodimeric molecule in which the cysteine-rich centers are linked by five disulfide bridges and are flanked by two predicted coiled-coil alpha-helices and three predicted amphipathic a-helices.
Across a broad range of species clusterin shows a high degree of sequence homology ranging from 70% to 80%. It is nearly ubiqitously expressed in most mammalian tissues and can be found in plasma, milk, urine, cerebrospinal fluid and semen.
It is able to bind and form complexes with numerous partners such as immunoglobulins, lipids, heparin, bacteria, complement components, paraoxonase, beta amyloid, leptin and others. Clusterin has been ascribed a plethora of functions such as phagocyte recruitment, aggregation induction, complement attack prevention, apoptosis inhibition, membrane remodelling, lipid transport, hormone transport and/or scavenging, matrix metalloproteinase inhibition.
A genuine function of clusterin has not been defined. One tempting hypothesis says that clusterin is an extracellular chaperone protecting cells from stress induced insults caused by degraded and misfolded protein precipitates.
Clusterin is up- or downregulated on the mRNA or protein level in many pathological and clinically relevant situations including cancer, organ regeneration, infection, Alzheimer disease, retinitis pigmentosa, myocardial infarction, renal tubular damage, autoimmunity and others.
|Storage||Store lyophilized protein at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after two weeks at 4°C.
Please avoid freeze-thaw cycles. The lyophilized protein remains stable until the expiry date when stored at -20°C.
|Source||293 cell line (Human embryonic kidney)|