Foldit Puzzles
Play puzzles to help scientific research and compete with other players. New puzzles are posted every week.
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This puzzle challenges players to design a single-chain protein with 85-105 residues. The starting structure has 85 residues, but more can be added at a cost of 32 points per residue. See the puzzle comments for filter details. The Baker Lab will run folding predictions on your solutions for this puzzle, and those that perform well will be synthesized in the lab. Remember, you can use the Upload for Scientists button for up to 5 designs that you want us to look at, even if they are not the best-scoring solutions!
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Closed
since
almost 8 years
ago
This is a throwback puzzle to the early days of Foldit. This spinach protein is critical for photosynthesis, and participates in the electron transfer chain within the chloroplast. The protein is modeled here in the reduced state, so no disulfides are expected to form. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
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Closed since almost 8 years ago
This puzzle features a protein designed by fiendish_ghoul in Puzzle 1331! Last week, we challenged players to try to predict the structure of this protein from the sequence alone, in Puzzle 1511. We have since solved the crystal structure of this protein, and here we are providing players with the refined electron density map at a resolution of 1.54 Å. The crystal's electron density shows that this protein folds up exactly as fiendish_ghoul designed it, with RMSD of 0.9 Å among Cα atoms! Players can load in solutions from Puzzle 1511 to see how their predictions fit in the electron density map, or players can try building into the electron density from an extended chain.
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Note: This puzzle was closed early due to an erroneous Residue Count Filter, and reposted as Puzzle 1515b. Players may load their work from this puzzle into the reposted puzzle.
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Note: This puzzle replaces the original Puzzle 1515, which was posted with an erroneous Residue Count Filter. Players may load their saved work from the original Puzzle 1515.
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Closed
since
almost 8 years
ago
This is a throwback puzzle to the early days of Foldit. This protein is able to absorb light and use the energy to transfer chloride ions across the cell membrane. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
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Closed
since
almost 8 years
ago
Redesign the active site to bind aflatoxin! This puzzle uses the same starting structure as Round 7 of the Aflatoxin Challenge, but now players may insert up to 20 extra residues into the designable loops, at a cost of 20 points per residue. Parts of the scaffold protein have been trimmed to reduce the size of the puzzle, and we've upweighted ligand interactions by a factor of five. We'd like to see if Foldit players can design proteins that make more interactions with the ligand! See the blog for more details.
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This puzzle challenges players to design a single-chain protein with 95-120 residues. The starting structure has 95 residues, but more can be added at a cost of 32 points per residue. See the puzzle comments for filter details. The Baker Lab will run folding predictions on your solutions for this puzzle, and those that perform well will be synthesized in the lab. Remember, you can use the Upload for Scientists button for up to 5 designs that you want us to look at, even if they are not the best-scoring solutions!
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Closed
since
almost 8 years
ago
This is a throwback puzzle to the early days of Foldit. This protein was designed by the Baker Lab in 2003, and has a topology unlike any natural protein yet discovered. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
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Closed
since
almost 8 years
ago
The structure of this protein is still unknown. Secondary structure predictions (from PSIPRED) are marked on the starting structure, and provide clues about where the protein might form helices and sheets!