isoform

noun

iso·​form ˈī-sə-ˌfȯrm How to pronounce isoform (audio)
: any of two or more functionally similar proteins that have a similar but not an identical amino acid sequence

Examples of isoform in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Depending on which isoforms are affected, the accumulation of tau may present as one of more than 20 different tauopathies. William A. Haseltine, Forbes, 25 Oct. 2024 The tau gene produces six distinct isoforms, or versions, of the protein based on how the protein sequence is cut. William A. Haseltine, Forbes, 25 Oct. 2024 Depending on the changes, the cells produce different forms, or isoforms, of proteins. Rachel Nuwer, Scientific American, 8 June 2023 Vitamin E has eight different isoforms, or types, and each may do slightly different things in our bodies. Cosby Stone, The Conversation, 22 Nov. 2019 To be declared positive, a certain percentage of the resulting isoforms have to appear in a certain range, and that range is down, somewhat, to interpretation. Joe Lindsey, Outside Online, 3 July 2018

Word History

First Known Use

1983, in the meaning defined above

Time Traveler
The first known use of isoform was in 1983

Dictionary Entries Near isoform

Cite this Entry

“Isoform.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoform. Accessed 21 Nov. 2024.

Medical Definition

isoform

noun
iso·​form ˈī-sə-ˌfȯrm How to pronounce isoform (audio)
: any of two or more functionally similar proteins that have a similar but not identical amino acid sequence and are either encoded by different genes or by RNA transcripts from the same gene which have had different exons removed
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!