PPT-AMINO

ACID A protein molecule consists of one or more long unbranched polymer chains composed of numerous small subunits or monomers is called amino acids There are 20 amino acids from which 18 have same structure. C483 Spring 2013. Questions. 1. . Amino acids with non-. ionizable. side chains are zwitterions when they are ________.. A. ) in any solution . . D) in alkaline solutions only . B. ) at physiological pH, pH = 7.4 . (Foundation Block). Dr. Ahmed Mujamammi. Dr. . Sumbul. . Fatma. Learning outcomes. What are the amino acids?. General structure.. Classification of amino acids.. Optical properties.. Amino acid configuration.. Grant . Alex . Curtis. Why?. The purpose of this study was to examine the net hormonal effect of amino acid supplementation on the overreaching resistance training-induced hormonal stress response.. Variables. Kevin . Cravedi. Biochemistry, B.S.. Class of 2010. Department of Chemistry. Senior Seminar. March 11, 2010. Thesis. Background of Method. Application of Method. Example 1: AzoPhe. Example 2: Sulfotyrosine (Sulfohirudin). 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. acids. Need to book. Molymods. (C,H,O & N) each group needs 16 single bonds, 4 double bonds, 4 Carbon, 2 Nitrogen, 4 oxygen, 10 hydrogen. Practical activity 21. ALSO! Need to give Mel 2 weeks notice on the chromatography . 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.. 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. Stryer. Short Course, Chapter 31. Nitrogen fixation. Bacteria. Nitrogenase. Costly—16 ATP per N. 2. molecule. Assimilation into Amino Acids. In microorganisms/plants: assimilation of ammonia is key—synthesis of most amino acids. Aromatic amino acid contains aromatic . ring. . They . are:. Phenylalanine(Benzene . ring or phenyl. ).. Tyrosine(phenol).. Tryptophan(indole).. Phenylalanine and Tryptophan are essential amino acids.. 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). :. a. . serine. b. . aspartate. Sample Problem . 19.1 . Structural Formulas of Amino Acids. Solution. a. b. . . Study Check . 19.1. Draw the zwitterion for . leucine. .. Answer. Continued. Sample Problem 19.1 . backbone.  . atoms . (see aminoAcids1).  but a unique set of . side chain . atoms. It's the side chains that make the 20 amino acids different from each other. . 1. Use the three identical backbone pieces and three unique side chain pieces below to construct three amino acids in the space to the right..