Scientists use alfafold in their research to strengthen an enzyme that is very important in photosynthesis, revealing a way of plants that are more heat tolerant.
As global warming is accompanied by more droughts and heats, the yield of some cruciferous crops is reduced. But less visible is what happens inside these plants, where high temperatures can break down the cellular machinery that keeps them alive.
At the heart of that mechanism lies the solar-powered process that supports all life on earth: Photosynthesis. Plants use photosynthesis to produce glucose that stimulates their growth through a complex choreography of enzymes inside plant cells. As global temperatures rise, the choreography may decrease.
Berkley Walker, an Associate Professor at Michigan State University, spends his days thinking about how to preserve that choreography. He says: “Nature already holds small copies of enzymes that can deal with heat,” he said. “Our job is to learn from those examples and build that same utility into the plants we depend on.”
Walker's lab focuses on an enzyme important in photosynthesis called glycerate Kinase (Glyk), an enzyme that helps plants recycle carbon during photosynthesis that, if it's too hot, Photosynthesis fails.
Walker's team began to understand why. Because the structure of glyk has never been determined experimentally, they turned to alphafold to predict its 3D structure, not only in plants but also in thermophilic algae that thrive in hot volcanoes. By taking alfafold's Capes and attaching them to the molefanlated shells, researchers can watch as these enzymes change and twist as temperatures rise.
This is where the problem lies: The three variable trumpets in Glyk's version of the plant were released in a very hot environment.
Experiments alone will never bring such an understanding, said Walker: “Alfafold enabled access to organizations that are inaccessible to closed enzymes and helped us identify important stages of transformation.”
Armed with this information, researchers in Walker's lab made a series of synthetic enzymes that replaced the unstable loops in the plant glyk borrowed from the algae's glyk. One of these is cleverly made, remaining in stables with temperatures up to 65 ° C.
