* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Protein
Survey
Document related concepts
Homology modeling wikipedia , lookup
Bimolecular fluorescence complementation wikipedia , lookup
Protein domain wikipedia , lookup
Protein folding wikipedia , lookup
Protein purification wikipedia , lookup
Nuclear magnetic resonance spectroscopy of proteins wikipedia , lookup
Circular dichroism wikipedia , lookup
Protein–protein interaction wikipedia , lookup
Western blot wikipedia , lookup
Protein mass spectrometry wikipedia , lookup
List of types of proteins wikipedia , lookup
Intrinsically disordered proteins wikipedia , lookup
Transcript
Protein Protein is important for: building up and repairing various body structures such as tendons, ligaments and muscles the structure of enzymes, hormones, haemoglobin, antibodies and plasma proteins. Protein is not able to be stored and the excess is broken down in the liver into energy and urea (which is a waste product of protein metabolism and is filtered and removed by the kidneys). Amino acids Proteins are made up of amino acids. There are 23 amino acids required by animals. Of these, some—called the essential amino acids—have to be supplied in the diet as they cannot be made by the animal. The other (12–13) non-essential amino acids can be manufactured by the animal. Essential amino acids Animal source proteins contain more essential amino acids than plant sources hence they have a higher biological value meaning that you would need to provide less food. In terms of biological values, dogs require 10 amino acids and cats 11, with the extra one being taurine. The more essential amino acids supplied in the food, the higher the biological value of that food and the less of it that needs to be fed to satisfy the protein requirement of the animal. Egg has the highest biological value of 100 and all other proteins are compared to this. The table below shows some common sources of proteins used in pet foods together with their biological values: 1 © NSW DET 2007 Animal sources Biological value meat–chicken, beef, lamb, fish 80 egg 100 liver 79 Plant sources soybean 67 wheat 48 corn 45 barley 42 2 © NSW DET 2007 3 © NSW DET 2007