A-site

noun

A binding site for tRNA in the ribosome, activating first (before the P-site and the E-site).

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Meanings

nounA-site (plural A-sites)

plural A-sites

  1. biologyA binding site for tRNA in the ribosome, activating first (before the P-site and the E-site).

Origin

Abbreviation of aminoacyl.

Full word history & related roots →
Cite this entry
APA

A-site. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/A-site

MLA

“A-site.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/A-site. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “A-site,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/A-site.

Source: A-site on Wiktionary, CC BY-SA 4.0.