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Puzzle
Expires: 08/12/21 18:00:00
Top Group: Go Science
Top Player: Phyx
Top Score: 8,833
Categories: Overall, Prediction
This is a throwback puzzle to the early days of Foldit. This small peptide was discovered in platypus venom-a rare instance of mammalian-produced venom, although this peptide appears similar to more widespread antimicrobials. This protein contains six cysteine residues that oxidize to form three disulfide bonds. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
Puzzle
Expires: 08/31/21 23:00:00
Top Group: Anthropic Dreams
Top Player: phi16
Top Score: 13,131
Categories: Design, Overall
Design a protein with the help of the new AlphaFold prediction tool! AlphaFold is an algorithm from the company DeepMind and can predict protein structures with incredible accuracy. We want to know if Foldit players can use feedback from AlphaFold to design new proteins! After you've designed a protein, you can upload your solution to the Foldit server and get back an AlphaFold prediction about how your design will actually fold up. Players should aim for an AlphaFold confidence and similarity of 80% or more. See the blog for more details about the AlphaFold prediction tool.
Puzzle
Expires: 08/31/21 23:00:00
Top Group: Go Science
Top Player: WBarme1234
Top Score: 10,581
Categories:
This sandbox puzzle features a designed binder for the TGF receptor, created by an anonymous player in Puzzle 2014. The hydrophobic residues at the interface will make for tight binding. The polar residues at the binding interface satisfy buried polar atoms on the target, but they also ensure that the binder will fold even in the absence of the target. For more, check out Foldit Lab Report #23 on YouTube! This sandbox puzzle is non-competitive and will not award any points.
Puzzle
Expires: 08/06/21 23:00:00
1 comment
Top Group: Go Science
Top Player: Crossed Sticks
Top Score: 13,842
Categories: Design, Overall
Design a protein that can bind to the IL-2 receptor (IL-2R)! IL-2 is a signaling protein that helps to regulate the human immune system. When it binds to the IL-2 receptor on the surface of an immune cell, it can induce the immune cell to change its behavior or differentiate into a new cell type. The precise effects of IL-2 vary widely for different cells, depending on the cell type, the local environment, and even the concentration of IL-2. A synthetic form of IL-2 is approved in the U.S. to treat certain types of cancer, but is associated with severe side effects. We'd like to design a protein binder that can block binding at the IL-2 receptor and attenuate IL-2 signaling.

Closed

Puzzle
Expired: 08/05/21 23:00:00
2 comments
Top Group: Go Science
Top Player: mirp
Top Score: 10,751
Categories: Overall, Prediction
This is a throwback puzzle to the early days of Foldit. This domain is a component of a large glycoprotein in humans that has been linked to autosomal dominant polycystic kidney disease. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
Puzzle
Expired: 08/04/21 23:00:00
1 comment
Top Group: Contenders
Top Player: Bletchley Park
Top Score: 19,131
Categories: Design, Overall, Symmetry
Design a symmetric protein trimer, with 3 identical chains of 60 residues each! This puzzle includes a Secondary Structure Objective, so no more than 50% of your design can form helices. The H-bond Network Objective encourages players to build buried, satisfied H-bond networks at the interface between symmetric chains. H-bond networks are a great way to introduce polar residues at the interface, but it's important that all of the bondable atoms make hydrogen bonds! We've also adjusted the H-bond Network Objective so that poor-scoring H-bonds may not contribute to networks; poor-scoring H-bonds will be displayed in red. This puzzle uses the Buried Unsats Objective, with a large penalty for buried polar atoms that can't make H-bonds. In this puzzle, there are no limits on the Complex Core, but we've included the Complex Core objective so players can see the core residues that can be incorporated into H-bond Networks.
Puzzle
Expired: 07/30/21 23:00:00
1 comment
Top Group: Go Science
Top Player: Bruno Kestemont
Top Score: 10,767
Categories: Design, Overall
Design a protein that can bind to the TGF-beta receptor! We have been seeing excellent designs from the previous puzzles, so this puzzle is set up just the same. Try to max out the Contact Surface Objective by using sidechains that pack closely against the target binding site!
Puzzle
Expired: 07/29/21 18:00:00
1 comment
Top Group: Anthropic Dreams
Top Player: grogar7
Top Score: 9,181
Categories: Overall, Prediction
This is a throwback puzzle to the early days of Foldit. This short protein is a component of the α-ketoglutarate dehydrogenase complex, which is best known for its role in the citric acid cycle. We are revisiting old Foldit puzzles so we can see how useful the recent additions to the game have been.
Puzzle
Expired: 07/28/21 23:00:00
4 comments
Top Group: Contenders
Top Player: Bletchley Park
Top Score: 22,224
Categories: Design, Overall, Symmetry
Design a symmetric protein trimer, with 3 identical chains of 80 residues each! This puzzle includes a Secondary Structure Objective, so no more than 50% of your design can form helices. The H-bond Network Objective encourages players to build buried, satisfied H-bond networks at the interface between symmetric chains. H-bond networks are a great way to introduce polar residues at the interface, but it's important that all of the bondable atoms make hydrogen bonds! We've also adjusted the H-bond Network Objective so that poor-scoring H-bonds may not contribute to networks; poor-scoring H-bonds will be displayed in red. This puzzle uses the Buried Unsats Objective, with a large penalty for buried polar atoms that can't make H-bonds. In this puzzle, there are no limits on the Complex Core, but we've included the Complex Core objective so players can see the core residues that can be incorporated into H-bond Networks.
Puzzle
Expired: 07/23/21 23:00:00
1 comment
Top Group: Go Science
Top Player: dcrwheeler
Top Score: 15,539
Categories: Design, Overall
Design a binding pocket for the olivetolic acid ligand! Olivetolic acid is a precursor to tetrahydrocannabinol (THC), the main psychoactive compound produced by cannabis. Scientists are interested in developing more efficient methods for THC synthesis, and a binder for this precursor could help to regulate or troubleshoot synthesis pathways. Olivetolic acid has a long hydrophobic tail that will naturally prefer to be buried in the binding pocket. But the ligand also has several polar atoms that need to be satisfied by H-bonds for successful binding!
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Developed by: UW Center for Game Science, UW Institute for Protein Design, Northeastern University, Vanderbilt University Meiler Lab, UC Davis
Supported by: DARPA, NSF, NIH, HHMI, Amazon, Microsoft, Adobe, RosettaCommons