HSS 2342 Chapter Notes - Chapter 6: Essential Amino Acid, Nitrogen Balance, Amine

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 2342
• Professor: Keir J Menzies

Document Summary

Protein: compounds with c, h, o & n atoms arranged into amino acids linked in a chain. All 20-22 amino acids have: central carbon, hydrogen, acid group(cooh), amino group(nh2) + unique side group(r) There are 9 essential (indispensable) and 11-13 non-essential (dispensable) amino acids. [we can only get essential a. a. from consumption, we can only make non-essential a. a. if our body need so] **in rare cases, conditionally essential can be made from non-essential a. a. know just 9 essential amino acids** *40% body protein in skeletal muscle, 25% in organs, and rest in the skin & blood. Good sources: meat, milk, eggs, legumes, grains and vegetables. Classified by function of: enzymes, hormones (eg. melatonin, insulin), structural elements (eg. Classified by function of: enzymes, hormones (eg. melatonin, insulin), structural elements (eg. actin, myosin), Immunoproteins (eg. antibodies), transporters (eg. albumin, hemoglobin), etc. Secondary structure: determined by weak electrical attractions within chain, results in twisting or folding of protein that provides strength and rigidity.