I can tell you that there is a not inconsiderable amount of effort going into the computational protein folding problem. I do not know where this funding comes

I can tell you that there is a not inconsiderable amount of effort going into the computational protein folding problem. I do not know where this funding comes from though. It's just a fundamentally hard problem, and it isn't clear (to me, at least) that it can really be solved. Quantum computing, maybe, but I'm not knowledgeable in that. Short of that, though, it might always turn out to be computationally more efficient to just "build" an analog body. There's no guarantee that we can simulate every physical process at faster than realtime speeds with CPUs. I don't think you're going to find a single line of accounting that says "improve biochemical knowledge of the body for modeling purposes". Essentially, all fundamental research in medicine falls into this bucket.