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transcription factor
noun
: any of various proteins that bind to DNA and play a role in the regulation of gene expression by promoting transcription
Examples of transcription factor in a Sentence
Recent Examples on the Web
There’s always another gene or transcription factor involved.
—Laura Helmuth, Scientific American, 24 Oct. 2024
The genetic transcription factors that handle the development of sea robins’ legs are also found in other animals’ limbs–including our own.
—Laura Baisas, Popular Science, 26 Sep. 2024
Genes rely on transcription factors to perform many essential functions in organs.
—Emily Mullin, WIRED, 22 Aug. 2024
Currently, the team is searching for similar transcription factors in lungs with chronic obstructive pulmonary disease and kidneys with chronic kidney disease.
—Emily Mullin, WIRED, 22 Aug. 2024
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Word History
First Known Use
1969, in the meaning defined above
Time Traveler
The first known use of transcription factor was
in 1969
Dictionary Entries Near transcription factor
Cite this Entry
“Transcription factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/transcription%20factor. Accessed 22 Nov. 2024.
Medical Definition
transcription factor
noun
: any of various proteins that bind to DNA and play a role in the regulation of gene expression by promoting transcription
More from Merriam-Webster on transcription factor
Britannica.com: Encyclopedia article about transcription factor
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