Scientists are using AlphaFold in their research to strengthen an enzyme that’s vital to photosynthesis, paving the way for more heat-tolerant crops. As global warming accompanies more droughts and heatwaves, harvests of some staple crops are shrinking. But less visible is what is happening inside these plants, where high heat can break down the molecular machinery that keeps them alive. At the heart of that machinery lies a sun-powered process that supports virtually all life on Earth: photosynthesis. Plants use photosynthesis to produce the glucose that fuels their growth via an intricate choreography of enzymes inside plant cells. As global temperatures rise, that choreography can falter. Berkley Walker, an associate professor at Michigan State University, spends his days thinking about how to keep that choreography in step. "Nature already holds the blueprints for lots of enzymes that can handle heat," he says.…