ubiquitinn.

Brit.

/juːˈbɪkwᵻtɪn/,

/jᵿˈbɪkwᵻtɪn/, U.S.

/juˈbɪkwədən/

Origin: Formed within English, by derivation. Etymons: ubiquitous adj., -in suffix¹.

Etymology: < ubiquit- (in ubiquitous adj.) + -in suffix¹.

Biochemistry.

A single-chain polypeptide, present in all eukaryotic organisms in a highly conserved form, which functions to label harmful, defective, or superfluous proteins for degradation by the proteasome.

ΚΠ

1975 Clin. Bull. 5 66 (title) Thymopoietin, ubiquitin and the differentiation of lymphocytes.

1975 D. H. Schlesinger et al. in Biochemistry 14 2214 Ubiquitin (formerly ubiquitous immunopoietic polypeptide or UBIP) is a 8451-dalton polypeptide.

1984 E. Holtzman & A. B. Novikoff Cells & Organelles (ed. 3) ii. viii. 231 The nonlysosomal system selectively degrades those proteins to which a polypeptide called ubiquitin has been linked.

1990 Nucleic Acids Res. 18 6449 A remarkable 72 out of 76 amino acid residues are invariant in the ubiquitins of fungi, plants and vertebrates.

2004 Washington Post 7 Oct. (Home ed.) a3/4 When a protein is slated for removal, a long string of ubiquitin molecules attaches to it.

This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	ubiquitin
释义	ubiquitinn. Brit. /juːˈbɪkwᵻtɪn/, /jᵿˈbɪkwᵻtɪn/, U.S. /juˈbɪkwədən/ Origin: Formed within English, by derivation. Etymons: ubiquitous adj., -in suffix¹. Etymology: < ubiquit- (in ubiquitous adj.) + -in suffix¹. Biochemistry. A single-chain polypeptide, present in all eukaryotic organisms in a highly conserved form, which functions to label harmful, defective, or superfluous proteins for degradation by the proteasome. ΚΠ 1975 Clin. Bull. 5 66 (title) Thymopoietin, ubiquitin and the differentiation of lymphocytes. 1975 D. H. Schlesinger et al. in Biochemistry 14 2214 Ubiquitin (formerly ubiquitous immunopoietic polypeptide or UBIP) is a 8451-dalton polypeptide. 1984 E. Holtzman & A. B. Novikoff Cells & Organelles (ed. 3) ii. viii. 231 The nonlysosomal system selectively degrades those proteins to which a polypeptide called ubiquitin has been linked. 1990 Nucleic Acids Res. 18 6449 A remarkable 72 out of 76 amino acid residues are invariant in the ubiquitins of fungi, plants and vertebrates. 2004 Washington Post 7 Oct. (Home ed.) a3/4 When a protein is slated for removal, a long string of ubiquitin molecules attaches to it. This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022). < n.1975
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