PPT-Amino Acids 2

C483 Spring 2013 Questions 1 The primary structure of a protein specifically describes the A location of disulfide bonds B linear sequence of amino acids C overall threedimensional shape . What are amino acids?. Amino acids are the building blocks of proteins.. In the body, they exist as zwitterions.. Zwitterions can behave as both an acid or a base.. Today we will:. Study . the acid-base properties of amino acids, . 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. 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.. 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.. (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.. 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.. 18. /2014. Biochemistry I. Dr. Loren Williams. Proteinogenic Amino Acids. An amino acid contains . an amine group . a carboxylic acid group, . a side-chain (or R-group,. all attached to the same chiral carbon atom (the Cα). 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. Part 1 - Amino Acids. Structure and Chemistry. Building Blocks of Proteins. Essential Amino Acids. Basic Structure. Stereochemistry. Side Chain Chemistry. Properties. Ionization. Bonding. Amino Acids & Proteins. ). Dr. . Sumbul. . Fatma. Learning outcomes. What are the amino acids?. General structure.. Classification of amino acids.. Optical properties.. Amino acid configuration.. Non-standard amino acids.. . are organic molecules that are the building block of . . proteins. .. -There is 20 . α. -amino acids commonly found in . proteins. . ( . they . have a carboxyl group and an amino group . . . Amino acids are weak . polyprotic. acids . . Neutral amino acids are (. gly. , ala, threonine ) are treated as diprotic acids .. acidic amino acids (. glu. , asp,) are treated as . triprotic. acids .. Peptide bond formation. : . α-carboxyl group of one amino acid (with side chain R1) forms a covalent peptide bond with α-amino group of another amino acid . ( . with the side chain R2) by removal of a molecule of water. The result is : Dipeptide ( i.e. Two amino acids linked by one peptide bond). By the same way, the dipeptide can then forms a second peptide bond with a third amino acid (with side chain R3) to give .