variable region

noun

The portion of an antibody whose amino acid sequence varies between different antibodies, forming the antigen‑binding domains that determine specificity.

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Meanings

nounvariable region (plural variable regions)

plural variable regions

  1. molecular biologybiochemistryThe portion of an antibody whose amino acid sequence varies between different antibodies, forming the antigen‑binding domains that determine specificity.
Cite this entry
APA

variable region. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/variable%20region

MLA

“variable region.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/variable%20region. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “variable region,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/variable%20region.

Source: variable region on Wiktionary, CC BY-SA 4.0.