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.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Ubiquitin — is a highly conserved regulatory protein that is expressed 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… …   Wikipedia

  • Ubiquitin — Bändermodell …   Deutsch Wikipedia

  • ubiquitin — ubiquitin. См. убикитин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • ubiquitin — /yooh bik wi tin/, n. a small protein, present in all eukaryotic cells, that participates in the destruction of defective proteins and in the synthesis of new proteins. [1985 90; UBIQUIT(OUS) + IN1] * * * …   Universalium

  • ubiquitin — noun A small polypeptide present in the cells of all eukaryotes; it plays a part in modifying and degrading proteins See Also: ubiquitinate, ubiquitinated, ubiquitination, ubiquitinylation, ubiquitylation …   Wiktionary

  • 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… …   Medical dictionary

  • Ubiquitin — Ubi|qui|tin 〈n. 11; Biochem.〉 Protein, das als Signalfaktor wirkt u. die kurzfristige Steuerung enzymatischer Reaktionen bewirkt [zu lat. ubique „überall“] * * * U|bi|qui|tin [↑ ubiquitär u. ↑ in (3)], das; s, e: im Cytoplasma vorhandenes… …   Universal-Lexikon

  • ubiquitin — A small protein, present in all eukaryotic cells, which plays an important role in tagging proteins destined for proteolytic cleavage (because they are damaged or no longer needed) …   Glossary of Biotechnology

  • ubiquitin — /yooh bik wi tin/, n. a small protein, present in all eukaryotic cells, that participates in the destruction of defective proteins and in the synthesis of new proteins. [1985 90; UBIQUIT(OUS) + IN1] …   Useful english dictionary

  • Ubiquitin B — Ubiquitin B, also known as UBB, is a human gene. PBB Summary section title = summary text = This gene encodes ubiquitin, one of the most conserved proteins known. Ubiquitin is required for ATP dependent, nonlysosomal intracellular protein… …   Wikipedia

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