单词 | zinc finger |
释义 | > as lemmaszinc finger zinc finger n. Biochem. a finger-like loop of peptides enclosing a bound zinc ion at one end, usually part of a larger protein molecule (esp. one regulating transcription). ΚΠ 1985 EMBO Jrnl. 4 1613 (caption) The repeats are thought to be extended DNA-binding ‘fingers’ linked by flexible joints, each having a zinc ion centre.] 1987 Proc. National Acad. Sci. U.S.A. 84 4841 A 30-amino acid peptide, which corresponds to the second ‘zinc finger’ domain of transcription factor IIIA, has been synthesized. 1988 BioFactors 1 34/2 Zinc fingers are postulated to bind selectively to control regions of the genomic DNA which is destined to transcribe 5S RNA. < as lemmas |
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