zinc finger

noun

: any of a class of proteins that typically possess tandem repeats of fingerlike loops of amino acids with each loop containing a zinc-binding site at its base consisting of two molecules of cysteine and two molecules of histidine and that regulates transcription by binding to specific regions of a gene's DNA
also : one of the fingerlike amino acid loops of such a protein

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Cite this Entry

“Zinc finger.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/zinc%20finger. Accessed 22 May. 2024.

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