This will be a debatable subject and will probably start a list of contenders.
insulin
The most important plasma protein for the blood's colloid osmotic pressure is albumin.
The most important factor in determining a protein's optimum pH level is its specific amino acid composition.
The sense of sight is considered to be the most important sense for human beings.
Ammonia is considered the most toxic by-product of protein metabolism. It is produced in the liver when amino acids are broken down and can be harmful if not properly excreted from the body.
Rubisco is considered the most abundant protein in the biosphere. It is an enzyme involved in photosynthesis, found in plants, algae, and some bacteria. Rubisco plays a crucial role in fixing carbon dioxide from the atmosphere into organic molecules.
They have quite a bit of protein in them; enough so that they are considered protein foods.
Because it has the most usage out of all the organic compounds. It acts as a catalyst, water proofing agent, as well as assisting in DNA replication and much more. It is so important, that scientists once thought that it was protein that carried the genetic information, not the DNA.
Its a protein
The most important plasma protein for the blood's colloid osmotic pressure is albumin.
selectivity
Whey protein, a by-product of cheese manufacture.
protein
The most important factor in determining a protein's optimum pH level is its specific amino acid composition.
Cows are considered to be the most important animals for Bedouin. The most important animal for Bedouin is the camel.
Jesus Christ is considered the most important prophet in Christianity.
The sense of sight is considered to be the most important sense for human beings.
Vegetable protein is the most important component, as the majority of the world's population cannot afford animal protein. Additionally, there are countries, such as India, where they are forbidden by their religion to eat some meats.