A food startup focused on protein just raised $3.5 million from VC firm Lux Capital, the company told Business Insider exclusively. The company, called Shiru, is led by a scientist who spent 2.5 years at Silicon Valley food startup Just. "What I'm interested in is unlocking the actual chemistry of how and why proteins behave," she told Business Insider. Visit Business Insider's homepage for more. It's one thing to make a plant-based burger that tastes like the real thing.