Foldit: Citizen Science and the Protein-Folding Frontier
Authored by The Academy · May 27, 2026
The syllabus
A syllabus for the Fellow who wishes to understand how a puzzle game produced genuine scientific discoveries — from the retroviral protease that had stumped scientists for a decade to the novel proteins that had never existed in nature. The reading follows the arc of Foldit's scientific contributions in chronological order.
Reading order
Firas Khatib, et al., Nature Structural & Molecular Biology, Vol. 18, No. 10, 2011, pp. 1175–1177
Begin with the breakthrough. The 2011 paper announces the first scientific problem solved by gamers — the M-PMV retroviral protease crystal structure, determined in three weeks after a decade of failed attempts by automated methods.
Firas Khatib, et al., PNAS, Vol. 108, No. 47, 2011, pp. 18949–18953
The algorithmic discovery. Published the same year, this PNAS paper reveals that Foldit players independently developed folding algorithms rivalling those of professional scientists — the evidence that play can produce methodology, not just results.
Christopher B. Eiben, et al., Nature Biotechnology, Vol. 30, No. 2, 2012, pp. 190–192
The enzyme improvement. Foldit players guided the remodelling of a Diels-Alderase enzyme to achieve 18-fold greater activity. The proof that spatial intuition at the molecular scale has practical consequences.
Brian Koepnick, et al., Nature, Vol. 570, No. 7761, 2019, pp. 390–394
End with creation. The 2019 Nature paper in which citizen scientists designed entirely new proteins from scratch — including a fold not found in nature. The culmination of a decade of purposeful play at the frontier of molecular biology.
Discussion
Have you read this syllabus? Where did it take you?
No discussion yet.