ANSC 1111 Lecture 8: Proteins and Protein Metabolism/Lipids
Document Summary
Absorption of free amino acids and di- and tripeptides in the small intestine. Hydrophilic, so they need transport proteins to get across. Liver decides what happens to all of these nutrients we have digested. Cortal blood system takes nutrients from the digestive tract to the liver. Stored as extra energy in the form of carbohydrates. Types of proteins made dependent on genes (dna) 3 rna nucleotides = one amino acid. Urea contains twice the amount of nitrogen. Movement of amino group - carbon skeleton. Processed to urea, uric acid for removal. Urea and uric acid are used as a non protein nitrogen feed source. Only useful to feed bacteria in ruminants. Bacteria can remove nitrogen and create protein and amino acids. Utilized by cells, microbes convert to amino acids. Microbial protein converted to amino acids that then flow through the omasum, abomasum, and small intestine. Proteins require active transport and a transport protein to move into an intestinal cell.
