The narrator may be unreliable for many reasons. Some of the typical scenarios are: The narrator may be of a dramatically different age than the people in the story, such as a child attempting to explain adult actions. The narrator may have prejudices about race, class or gender. The narrator may have low intelligence.
Thus, proteins containing these amino acids would be made up of very small amounts of sulfur, in addition to the more common elements listed above. The five chemical elements of protein are, 1.) sulfur 2.) carbon 3.) hydrogen 4.) oxygen 5.) nitrogen.
Our current examination of proteins and amino acids will cover the metabolism of the protein we eat, dietary protein, and catabolic situations in the body. A general understanding of the molecular structure of proteins and amino acids is needed to understand their metabolism. The Structure Of Proteins & Amino Acids. Protein is comprised of carbon, hydrogen, oxygen and, most importantly, nitrogen. Protein may also contain sulfur, cobalt, iron, and phosphorus.