PPT-Amino acids

Foundation Block Learning outcomes What are the amino acids General structure Classification of amino acids Optical properties Amino acid configuration Nonstandard amino acids Derivatives of amino acids. 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 . 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.. 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.. Subunits (building blocks) of peptides and proteins. Neurotransmitters. Metabolic intermediates. glutamate. γ. -. aminobutyric. acid. (GABA). Proteins are synthesized from 20 ‘standard’ . α. -amino acids. Their names have 3- and 1-letter abbreviations.. 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.. Debalina. . Mukhopadhyay. . . Containing carbon, hydrogen, nitrogen, oxygen. . Building blocks of protein. . Contain Amino group (NH2+) , carboxyl . group . (COO-) , Alkyl group (R ) / H . . alpha carbon contains the functional groups.. 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). When an amino acid with positive and negative charges is overall neutral in charge, it is said to be at its . isoelectric point (. pI. ). .. . Ball-and-stick model of glycine at its . pI. of 6.0.. Plants and bacteria produce all of their amino acids using NH. 4. +. and NO. 3. –. .. Humans can synthesize 9 of the 20 amino acids found in their proteins.. Nonessential amino acids are synthesized in the body, while essential amino acids must be obtained from diet.. 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. . amine group. Draw. a carboxylic acid group. Join. them together to form a molecule with an amine and . a carboxylic acid . group. Amino Acids. Building blocks of proteins. Two functional groups: a carboxylic acid and a primary amine. 1. . Overview. The catabolism of the amino acids involves:. Removal of α-amino groups. . Breakdown of the resulting carbon skeletons.. The resulting compounds will be used to form seven intermediate products: . Proteins. TextBook. : . HARPERS . REVIEW OF BIOCHEMISTRY. Anatomy of an amino acid. . -Amino acids. A. Example. (glycine). 2-aminoethanic acid. (alanine). 2-aminopropanoic acid. (aspartic acid). 2-aminobutane-1,4-dioic acid. u. sing paper chromatography. Kate Andrews. Lorraine Bruce. Unit 1 DNA and the Genome. 3 Control of gene expression. Separation and identification of amino acids using paper chromatography.. Cells and Proteins.