Look up: ubiquitin

1. 
   Ubiquitin
   Ubiquitin: A small but extremely important protein that acts the 'kiss of death' to other proteins. Ubiquitin consists of only 76 amino acids. In the normal course of events, proteins are inactivated by the attachment of ubiquitin to them, a process called ubiquitination. Ubiquitin acts as a tag by which the protein-transport machinery ferries a pr ...
   Found on http://www.medterms.com/script/main/art.
   
   
2. 
   ubiquitin
   A protein (8.5 kD) found in all eukaryotic cells. Can be linked to the lysine side chains of proteins by formation of an amide bond to its C-terminal glycine in an ATP-requiring process. The protein/ubiquitin complex is subject to rapid proteolysis. Ubiquitin also has a role in the heat-shock response.
   Found on
   
   
3. 
   ubiquitin
   <protein> A protein (8.5 kD) found in all eukaryotic cells. Can be linked to the lysine side chains of proteins by formation of an amide bond to its C terminal glycine in an ATP requiring process. ... The protein/ubiquitin complex is subject to rapid proteolysis. Ubiquitin also has a role in the heat shock response. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. 
   Ubiquitin
   `Ubiquitin` is a highly conserved small regulatory protein that is `ubiquitous` in eukaryotes. `Ubiquitination` (or `Ubiquitylation`) refers to the post-translational modification of a protein by the covalent attachment (via an isopeptide bond) of one or more ubiquitin monomers. The most prominent function of Ubiquitin is labeling proteins for proteasomal degradation (see: Proteasome). Besides this function, ubiquitination also controls the stab...
   Found on http://en.wikipedia.org/wiki/Ubiquitin
   
   
5. 
   ubiquitin
   (from the article `Ciechanover, Aaron J.`) ...that they discovered involves a series of carefully orchestrated steps by which cells degrade, or destroy, the proteins that no longer serve any ... ...Philadelphia. There the three scientists did much of their prizewinnning research on how cells degrade, or destoy, the proteins that are no ...
   Found on http://www.britannica.com/eb/a-z/u/1
   
   
6. 
   ubiquitin
   ubiquitin A small protein, present in all eukaryotic cells, that participates in the destruction of defective proteins and in the synthesis of new proteins.
   Found on http://www.wordinfo.info/words/index/inf
   
   
7. 
   ubiquitin
   A small (76 amino acyl residues) protein found in all cells of higher organisms and one whose structure has changed minimally during evolutionary history; involved in at least two processes; histone modification and intracellular protein breakdown.
   Found on