Ubiquitin Fraction I Extract from GeneTex

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Products	Ubiquitin Fraction I Extract from GeneTex
Company	GeneTex
Item	Ubiquitin Fraction I Extract
Price	$400.00
Description	Proteolytic degradation is critical to the maintenance of appropriate levels of short-lived and regulatory proteins as important and diverse as those involved in cellular metabolism, heat shock and stress response, antigen presentation, modulation of cell surface receptors and ion channels, cell cycle regulation, transcription, and signalling factors. The ubiquitin-proteasome pathway deconstructs most proteins in the eukaryotic cell cytosol and nucleus. Others are degraded via the vacuolar pathway which includes endosomes, lysosomes, and the endoplasmic reticulum. The 26S proteasome is an ATP-dependent, multisubunit (~31), barrel-shaped molecular machine with an apparent molecular weight of ~2.5 MDa. It consists of a 20S proteolytic core complex which is crowned at one or both ends by 19S regulatory subunit complexes. The 19S regulatory subunits recognize ubiquitinated proteins and play an essential role in unfolding and translocating targets into the lumen of the 20S subunit. An enzymatic cascade is responsible for the attachment of multiple ubiquitin molecules to lysine residues of proteins targeted for degradation. Several genetic diseases are associated with defects in the ubiquitin-proteasome pathway. Some examples of affected proteins include those linked to cystic fibrosis, Angelmans syndrome, and Liddle syndrome. GTX80876 is the protein fraction of HeLa cell extract that does not bind to anion exchange resin. GTX80876 contains ubiquitin, ubiquitin conjugating enzymes (E2s), and ubiquitin ligases (E3s). GTX80876 is ideal for demonstrating if FI enzymes are critical for degradation of in vitro substrates as well as in vitro conjugation activity. Type: Proteins and peptides Form: 8 mg/ml protein from HeLa cells in 25 mM HEPES, pH 7.6.
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