What does "isoform" mean?

Any of several different forms of the same protein, arising from either single nucleotide polymorphisms, differential splicing of mRNA, or post-translational modifications (e.g. sulfation, glycosylation, etc.)

What is a synonym for "isoform"?

Common synonyms include: isovariant.

Isoform

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any of several different forms of the same protein, arising from either single nucleotide polymorphisms, differential splicing of mRNA, or post-translational modifications (e.g. sulfation, glycosylation, etc.)
"Intriguingly, the rat C1b isoform of the calcitonin receptor (CTR) (see Section VI-B) has very little interaction with the thyroidally derived form of calcitonin."

Synonyms

All synonyms

isovariant

Example

More examples

"Intriguingly, the rat C1b isoform of the calcitonin receptor (CTR) (see Section VI-B) has very little interaction with the thyroidally derived form of calcitonin."

Etymology

From iso- + form.

Related phrases

single nucleotide polymorphism

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.