商品编号


AG-40T-0508-C100



品牌


Adipogen



公司


Adipogen



公司分类


Proteins



Size

100 ?g

商品信息


More Information



Product Details



Synonyms

UBB; Ubiquitin B



Product Type

Protein



Properties



Source/Host

E. coli



Sequence

Human ubiquitin R74 mutant (Accession Nr. P0CG47) fused to a N-terminal His-tag. Diglycine motif at the C-terminus is removed, protein end with R74.



Crossreactivity

Human



Formulation

Lyophilized from a solution in deionized water.



Other Product Data


Use:
Ideal for use as a negative control for thioester formation. Reaction conditions will need to be optimized for each specific application.



Declaration

Manufactured by Boston Biochem



Shipping and Handling



Shipping

BLUE ICE



Short Term Storage

+4°C



Long Term Storage

-20°C



Handling Advice

Aliquot to avoid freeze/thaw cycles.



Use/St
ABI
lity

Stable for at least 1 year after receipt when stored at -20°C.



Documents



MSD
S

No



Product Specification Sheet



Datasheet


Download PDF





Ubiquitin is a 76 amino acid (aa) protein that is ubiquitously expressed in all eukaryotic organisms. ubiquitin is highly conserved with 96% aa sequence identity shared between human and yeast ubiquitin, and 100% aa sequence identity shared between human and mouse ubiquitin. In mammals, four ubiquitin genes encode for two ubiquitin-ribosomal fusion proteins and two poly-ubiquitin proteins. Cleavage of the ubiquitin precursors by deubiquitinating enzymes gives rise to identical ubiquitin monomers each with a predicted molecular weight of 8.6 kDa. Conjugation of ubiquitin to target proteins involves the formation of an isopeptide bond between the C-terminal glycine residue of ubiquitin and a lysine residue in the target protein. This process of conjugation, referred to as ubiquitination or ubiquitylation, is a multi-step process that requires three enzymes: a ubiquitin-activating (E1) enzyme, a ubiquitin-conjugating (E2) enzyme, and a ubiquitin ligase (E3). ubiquitination is classically recognized as a mechanism to target proteins for degradation and as a result, ubiquitin was originally named ATP-dependent Proteolysis Factor 1 (APF-1). In addition to protein degradation, ubiquitination has been shown to mediate a variety of
BIOLOG
ical processes such as signal transduction, endocytosis, and post-endocytic sorting. Mature forms of ubiquitin have a highly conserved diglycine motif at the carboxyl terminus which is crucial for activity and recognition in conjugation and deconjugation reactions. The removal of this diglycine peptide (Ubiquitin ending in Arg74) results in an inactive ubiquitin. This ubiquitin cannot be activated by the ubiquitin-activating (E1) enzyme in an ATP-dependent manner, is not capable of subsequent thioester interaction with ubiquitin-conjugating (E2) enzyme and/or ubiquitin ligases (E3), and is thus not capable of forming isopeptide bonds or ubiquitin conjugates. It can be used as a negative control in conjugation reactions, or inbinding studies with E1, E2, E3 and DUB enzymes or other proteins that interact with ubiquitin via ubiquitin-associated domains (UBAs) or ubiquitin-interacting motifs (UIMs).