Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
AlphaFold often did not recover both known structures of fold-switching proteins in a 2024 study. It found both experimentally observed conformations for 32 of 92 proteins likely represented in its training data (35%); among seven proteins confirmed after training, it captured both for one. The results point to a specific limitation in this test—not proof that AlphaFold is broadly ineffective or that every prediction is simply memorized.
What it means for a protein to switch folds
A fold-switching protein can adopt two distinct, experimentally observed structures. This is more than a small movement of a flexible loop or a rigid-body shift: the protein changes its overall fold. In some cases, which conformation it adopts is linked to biological context.
Predicting one of those structures does not show that a model can represent the other. Chakravarty and colleagues treated the two known conformations as a simplified test of a protein’s broader landscape of possible folded states; they did not claim that two structures describe every state a protein can occupy. The study, published in Nature Communications on August 24, 2024, focused on whether AlphaFold could recover both known folds.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHow often did AlphaFold recover both known structures?
The study pooled predictions from AlphaFold2 and AlphaFold3 implementations. Its success criterion was strict: a protein counted as a success only if the models recovered both experimentally determined conformations. Finding one structure alone did not qualify.
#1 Best Overall
- FOR BASIC TEACHING TO ADVANCED SCIENCE: 444 pieces molecular model kit, including 136 atoms, 158 bonds and 150 parts for Carbon-60(Fullerene), provides to students from Grade 7 to Graduate level.
- TWO CHEMICAL STRUCTURE MODELS: The ball-and-stick models use spheres to represent atoms and sticks to represent chemical bonds. In the space-filling model, the spheres are drawn to scale and are next to one another as atoms are in real molecules.
- CHEMISTRY EDUCATIONAL MOLECULE MODEL IN 3D: It can display chemical structure, molecular bond, and bond angle in all directions. Demonstrate fundamental molecular geometry, chemical molecular structure, stereochemistry with 3D modeling studies.
- EASY TO LEARN: The universal standard adopted for each atom's color makes it easier for you to use and learn. Atoms and chemical bonds combine tightly and firmly and can be easily disassembled by disconnecting tools.
- If you’re not in love with it for whatever reason, we’ll give you a full replacement or refund—no questions asked. If you have any doubt, please tell us. With nothing to worry about, or even to share with your friends, try it now.
| Test group | Result | What the result measures |
|---|---|---|
| 92 fold-switching proteins likely represented in training | 32 of 92 (35%) | Both experimentally observed folds recovered |
| 7 fold-switching proteins confirmed after training | 1 of 7 (14%) | Both experimentally observed folds recovered |
For the likely-in-training group, the authors assessed more than 280,000 combined AlphaFold2 and AlphaFold3 models. They generated approximately 280,000 additional predictions for the seven-protein test set. In the paper’s discussion, the authors describe the overall sampling effort as more than 500,000 structures across 99 fold-switchers. These figures refer to different summaries of the study’s analyses, not to a single number of distinct proteins.
Why training-set exposure matters
The contrast between the two groups makes training exposure central to interpreting the findings. The 92 proteins were considered likely to have been represented in training; the seven were experimentally confirmed after training. The models recovered both folds more often in the first group, but the study’s results do not by themselves establish why every individual prediction succeeded or failed.
Rank #2
- Package: Include 444 pieces chemistry molecular model kit, including 132 atoms, 158 bonds and 150 parts for Carbon-60(Fullerene), you can now understand 3D complex molecule structures
- High Quality Material: SOUJOY Chemistry model kit is made of high quality PP and LDPE to manufacture, feel smooth, no scraps or cutting edges from the holes, easy to remove and put on
- 3D Visual Active Learning: This organic and inorganic model kit is designed for easy chemistry learning for organic, inorganic, ochem and functional groups, you can now understand 3D complex molecule structures with ease by building your favorite molecules with them
- Perfect Gift for Learning: Our chemistry kit is modeling simple and small to more advanced and complex chemical structures for schools and college level, students of all ages, researchers and enthusiasts
- Easy to Storage: The atom parts and links are color coded to national standards for ease of identification, and the pieces come in a slim plastic box for convenient storage
The authors interpret some apparent successes as evidence consistent with structure memorization: a model may reproduce structures encountered during training rather than demonstrate that it has learned the physical principles needed to predict a protein’s alternative fold. This is a proposed explanation for results in the tested systems, not a conclusion that all AlphaFold predictions are memorized or that the model has learned nothing about protein structure.
Free tools Windows power users keep installed
One-click scans. No signup required.
What confidence scores and the XCL1 case reveal
In this test, AlphaFold2 confidence scores tended to disfavor experimentally observed alternative folds. The authors also report that those scores did not reliably distinguish low- from high-energy conformations in the cases they examined. A high confidence score therefore should not be treated as evidence, by itself, that a fold-switching protein’s alternative state has been ruled out or that the predicted state is the only biologically relevant one.
Rank #3
- YOPAY 240 pieces molecular model kit is your chemistry best friend, it includes 86 Atoms and 153 Links and 1 Short link remover tool, Covering 12 elements: hydrogen, carbon, oxygen, nitrogen, sulphur, phosphorus, fluorine, chlorine, bromine, iodine, metal and boron, you can now understand 3D complex molecule structures with ease to provide hands-on learning experience of molecular structures and functional groups.
- The Most Effective and Fun Way to Learn Chemistry - The chemistry molecular structure model kit can unlock and develop your chemistry genius, Models make science come to life! Use atom pieces to practice structures, cyclic compounds, empirical formula, stereo isomerism, and VSEPR theory. Explore chemistry and physics concepts. Visualize atomic structure with atoms, bonds, orbitals, and links.
- High Quality and Portable - It is extremely hard to damage our atom balls or bonds because we used the highest quality PP and LDPE to manufacture. It is made from high quality materials designed for easy assembly. The pieces are color coded to national standards and all kits come with a box for easy storage and transport with your other textbooks, notes, and books.Our model kit is deserve to serve you for years to come.
- For All Levels of Learning - The chemistry model kit utilize the ball and stick toys educational structure to teach students from grade 7 to the University Graduate Level (Over 12 years). Demonstrate fundamental molecular geometry, chemical and biology structure, stereo chemistry with 3D modelling studies.The perfect tool for memorizing organic, inorganic and functional group chemistry.
- 3D Visual Active Learning, Let's Build; Thanks to our universal standard color coded Atomic Balls, you can now understand 3D complex molecule structures with ease by building your favorite molecules with our 240 ball and stick models, The YOPAY Atom Model Kit is your chemistry best friend.
The paper also discusses an AlphaFold3 prediction for human lymphotactin (XCL1) in which evolutionary restraints were misassigned. The authors use this case to illustrate how a prediction can be affected by how coevolutionary signals are handled. It is a specific example, not an explanation for every model output.
What readers should—and should not—conclude
- Supported by this test: recovering both known folds was difficult, especially for the seven proteins whose structures were confirmed after model training.
- Supported as an interpretation: some results are consistent with models relying on structures encountered during training rather than successfully deriving an alternative fold from sequence signals.
- Not established: that AlphaFold is useless for ordinary single-structure prediction, that every successful prediction is memorization, or that the tested proteins represent all proteins with multiple conformations.
- Practical implication: for a suspected fold-switcher, one predicted structure is not enough to establish that the model captures its alternatives. Experimental evidence and biological context remain important when interpreting such predictions.
Where to inspect the study and its data
The paper’s supporting analysis is linked through its Zenodo record and GitHub repository. For a specialist account of why fold switching matters to biology and disease, see Chemistry World’s September 30, 2024 report.
Quick Recap
Rank #4
- Visualize Molecular: The molecular model kit simplifies complex chemistry concepts into tangible 3D structures improve learning efficiency, suitable for students from Grade 7 to Graduate level.
- 240 Pcs Complete Set: The atom model kit includes with 86 atoms and 154 bonds, explore most the molecules structures from simple compounds to complex polymers.
- Effortless Assembly: Embedded component design ensures easy to construct Ball-and-stick and Space-filling models that maximizes focus on exploration without complex assembly.
- Durable & Portable: Built to last, the chemistry set is crafted from high-quality materials. Plus, its portable design allows you to take your experiments learning anywhere, between the home, classroom and lab.
- Essential Study Tool: Whether you're studying organic chemistry, biochemistry, or molecular biology, molecule building kit is an perfect learning tool for you deeper comprehension of molecular science.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
