The anaphase-promoting complex (APC) is the crucial ubiquitin ligase targeting the regulatory machinery of the cell cycle. Emi1, a major modulator of APC activity, is thought to act competitively as a ...
The reversible attachment of ubiquitin chains regulates the activity, localization and/or stability of a myriad of cellular proteins. The formation of ubiquitin chains requires the sequential action ...
An active enzyme system for fatty acid chain elongation exists in Paratenuisentis ambiguus (Acanthocephala), which elongates [1-14C]palmitic acid consecutively to stearic and arachidic acid. Highest ...
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