PPT-Amino Acids: Disposal of Nitrogen

UNIT IV Nitrogen Metabolism Part 2 Most of the nitrogen in the diet is consumed in the form of protein typically amounting to 70100 gday in the American diet Proteins are generally too large to be absorbed by the intestine . Linda F. Bisson. Department of Viticulture and Enology. UC Davis. April 18, 2014. Nitrogen Composition of Grapes. Variety of nitrogenous compounds in grape juice. Nitrogen compounds vary by variety and with environmental conditions. Codons. Prefixes, Suffixes and Vocabulary. Poly. = many. Peptide bond . =bond between two amino acids.. Anti. = against, opposite. Dehydration. = loss of water. Polypeptide. = long assembled string of amino acids.. UNIT IV:. Nitrogen Metabolism. Part . 3. C. Transport of ammonia to the liver. Two mechanisms are available in humans for the transport of ammonia from the peripheral tissues to the liver for its ultimate conversion to urea. . CHAPTER 3, Part 1 . Amino Acids and Peptides . To know the structure and naming of all 20 protein amino acids. To know the structure and properties of peptides and the particularly the structure of the peptide bond.. Stryer. Short Course. Chapter . 3. Amino Acid Structure. Alpha carbon. Sidechain. Proteins. peptides. Stereochemisty. L-amino acids. Glycine. R/S . vs. D/L. L-isoleucine. racemization. Ionization of Amino Acids. THE EXCRETION OF AMMONIUM IONS. A part of NH4+ that is formed in the degradation of amino acids is used for the biosynthesis of nitrogen compounds. In most of the land living vertebrates the excess NH4+ is converted in urea and in that form is excreted. In birds and reptiles it is converted into uric acid and in aquatic animals it is directly excreted as urea.. Pratt and . Cornely. Chapter 18. Overview. Nitrogen assimilation. Amino acid biosynthesis. Nonessential aa. Essential aa. Nucleotide biosynthesis . Amino Acid . Catabolism. Urea Cycle. Juicy Steak Part 2. Chapter 30, . Stryer. Short Course. Overview. Amino Acid Catabolism. Nitrogen removal. Urea Cycle. Metabolism of carbon backbone. Amino acid catabolism. Amino acids . from diet or protein turnover. Salvaged for use in proteins or catabolized. B.2. Properties of 2-amino acids . (B.2.2). Zwitterion. (dipolar) . amino acids contain both acidic and basic groups in the same molecule . therefore, are . amphoteric. in nature (capable of behaving as acids or bases). (Foundation Block). Learning outcomes. What are the amino acids?. General structure.. Classification of amino acids.. Optical properties.. Amino acid configuration.. Non-standard amino acids.. Derivatives of amino acids.. DR AMINA . BIOCHEMISTRY. All tissues have some capability for synthesis of:. The non-essential amino acids,. Amino acid remodeling, . and Conversion of non-amino acid carbon skeletons into amino acids and other derivatives that contain nitrogen. . . 1. Nitrogen Fixation. 2. Amino Acid Biosynthesis. Nitrogen. is an essential element found in . proteins. , . nucleic acids . and many other molecules. Biologically available nitrogen is scarce. imino. acid.” . Figure 5: Comparison of the secondary amino group found in proline with the primary amino group found in other amino acids such as alanine.. 2. Proline: . Proline differs from other amino acids in that its side chain and amino N form a rigid, five -member red ring structure (Figure 5). Proline, then, has a secondary (rather than a primary) amino group. It is frequently referred to as an “. The general ways of amino acids degradation:. Transamination. Deamination. Decarboxylation. The major site of amino acid . degradation. . - the . liver. . . BIOSYNTHESIS . OF UREA. Urea biosynthesis occurs in four stages: .