actin

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English[edit]

Etymology[edit]

From Ancient Greek ἀκτίς (aktís, ray), based on the shape of the filament formed, and the English chemical suffix -in.

Noun[edit]

actin (countable and uncountable, plural actins)

  1. (biochemistry, uncountable) A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament).
  2. (biochemistry, countable) One of the six isoforms of actin.

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