Foldit Puzzles

1026: Revisiting Puzzle 153: Rosetta Decoy 13

This is a throwback puzzle to the early days of Foldit. This pilin protein allows the P. aeruginosa bacterium to adhere to human cells, sometimes resulting in infection. The starting structure is a Rosetta model. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.

1025: Revisiting Electron Density Puzzle 724

We're revisiting this old electron density puzzle to test some recent changes to Foldit! In this puzzle, there are bits of density which don't belong to the copy of the protein that you're working on. You'll have to decide which bits of density to match with, and which bits to ignore. Try to fit the protein into the density to get the best score! Secondary structure predictions are posted in the puzzle comments along with info about available tools in the game.

1024: 75 Residue Monomer Design: Zero Cysteines

In this puzzle, we're asking players to design a protein with no cysteine residues! Remember that the SS Design filter now considers the environment around each residue, in addition to secondary structure. This means that some residue types will be restricted depending on whether the position is in the core or surface of the protein. There are several other filters in effect; see the puzzle comments for 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!

1023: Revisiting Puzzle 150: Rosetta Decoy 12

This is a throwback puzzle to the early days of Foldit. This human protein helps to regulate the reduction potential of the cell, and should be modeled here in reduced form (without disulfides bonds). The starting structure is a Rosetta model. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.

1020: Revisiting Electron Density Puzzle 663

NOTE: The deadline for this puzzle has been extended to December 13 at 14:00.

1022: Revisiting Puzzle 148: Rosetta Decoy 11

This is a throwback puzzle to the early days of Foldit. This small protein is a component of the major histocompatibility complex (MHC) which is essential to a functioning immune system. The starting structure is a Rosetta model. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.

1021: 65 Residue Monomer Design: SS Design

In this puzzle, the SS Design filter also considers the environment around each residue, in addition to secondary structure. This means that some residue types will be restricted depending on whether the position is in the core or surface of the protein. There are several other filters in effect; see the puzzle comments for 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!

1019: Revisiting Puzzle 147: Rosetta Decoy 10

This is a throwback puzzle to the early days of Foldit. This protein is part of a signaling pathway that regulates sporulation in B. subtilis. The starting structure is a Rosetta model. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.

1018b: 65 Residue Symmetric Trimer Design

It's been a long time since our last Symmetric Design puzzle, and Foldit has seen a lot of improvements in the mean time! This puzzle uses two "Core Existence" filters. One checks that the monomer unit of your design contains a well-packed core, and another ensures that the entire symmetric complex has a buried core. Click the "Show" checkbox beneath the Core Existence filter to see which residues have been identified as Core (orange), Boundary (green), or Surface (blue). There are several other filters in effect; see the puzzle comments for 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!

1018: 65 Residue Symmetric Trimer Design (REPOSTED as 1018b)

It's been a long time since our last Symmetric Design puzzle, and Foldit has seen a lot of improvements in the mean time! This puzzle uses two "Core Existence" filters. One checks that the monomer unit of your design contains a well-packed core, and another ensures that the entire symmetric complex has a buried core. Click the "Show" checkbox beneath the Core Existence filter to see which residues have been identified as Core (orange), Boundary (green), or Surface (blue). There are several other filters in effect; see the puzzle comments for 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!