: any of two or more functionally similar proteins that have a similar but not an identical amino acid sequence
Example Sentences
Recent Examples on the WebVitamin 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
Medical Definition
isoform
noun
iso·form ˈī-sə-ˌfȯrm
: 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