The rubiscolins are a group of opioid peptides that are formed during digestion of the ribulose bisphosphate carboxylase/oxygenase (Rubisco) protein from spinach leaves. Two of them are known, acting as weak agonists of the delta opioid receptor selective for the G protein signaling pathway.
The rubiscolins are a group of opioid peptides that are formed during digestion of the ribulose bisphosphate carboxylase/oxygenase (Rubisco) protein from spinach leaves. Two of them are known, acting as weak agonists of the delta opioid receptor selective for the G protein signaling pathway.
== Background == Rubisco is a key protein in carbon fixation and is found in photosynthetic organs such as leaves in very high concentration. It usually accounts for 40% of the protein mass of a plant. With all forms of RuBisCO (not only plants, but also bacteria) taken into account, RuBisCO is possibly the most abundant type of protein on Earth.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).