We do know of the derivation of luciferine. It came up on my spell check every time I typed the word. We did mention it and wondered if this would be highlighted by people against genetic modification. Americans don't seem to be too afraid. A lot of controversy surrounds GM, and Europe, as you mentioned, has been particularly opposed.
People are always afraid of the unknown.
However, everyone is entitled to their opinion, and in order to enhance ideas you need opposition to overcome. One of the main problems with Europe is that it views its farmland as countryside, which is fast diminishing. Sounds like America may be a better place to do business. The transatlantic divide over GM means that we would probably move our business over to the US where there is more acceptance. Yes, potentially you could make body parts glow.