| 单词 | repressor protein |
| 释义 | > as lemmasrepressor protein 2. Biochemistry and Genetics. A protein which by its action on specific DNA or RNA sequences inhibits the transcription or translation of a gene or set of genes, esp. those coding for an enzyme or enzymes. Also repressor protein. ΚΠ 1957 H. J. Vogel in W. D. McElroy & B. Glass Chem. Basis Heredity ii. 286 In order to facilitate further discussion, the following terminology will be used hereafter:..the substance thus decelerating enzyme synthesis is a ‘represser’ (‘repressor’). 1966 Proc. National Acad. Sci. U.S.A. 55 1087 One could assume that in order to repress the transcription of late function genes, a repressor protein may first have to be synthesized. 1973 B. J. Williams Evol. & Human Origins vi. 91/1 Diffusable repressor substances that form complexes with specific operator regions prevent the mRNA transcription. 1995 Nature 11 May 105/1 The Drosophila transcription factor Krüppel..converts from an activator to a repressor in a concentration-dependent manner. 2007 Science 25 May 1135/1 Cry and Per proteins are transcriptional repressors. < as lemmas |
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