نتایج جستجو برای: ubiquitin
تعداد نتایج: 28509 فیلتر نتایج به سال:
The CDC34 gene of Saccharomyces cerevisiae encodes a 295-residue ubiquitin-conjugating enzyme (E2). The function of this ubiquitin-conjugating activity remains to be defined as its in vivo substrates are presently unknown. The bacterially expressed and purified Cdc34 protein is shown here to catalyze its own ubiquitination via an intramolecular transfer of its thiol ester-linked ubiquitin to a ...
The covalent attachment of the protein ubiquitin to intracellular proteins by a process known as ubiquitylation regulates almost all major cellular systems, predominantly by regulating protein turnover. Ubiquitylation requires the co-ordinated action of three enzymes termed E1, E2 and E3, and typically results in the formation of an isopeptide bond between the C-terminal carboxy group of ubiqui...
Mouse fibroblasts (3T3-L1 cells) accumulate detergent- and salt-insoluble aggregates of proteins conjugated to ubiquitin when incubated in the presence of inhibitors of lysosomal cysteine cathepsins, including E-64. These ubiquitin-protein conjugates co-fractionate with lysosomes on density gradients and are found in multivesicular dense bodies which by electron microscopy appear to be engaged ...
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