PPT-Structure of Protein-II SECONDARY STRUCTURE

Localized arrangement of adjacent amino acids formed as the polypeptide chain folds The regions of ordered structures formed by interaction of hydrogen bond donor and hydrogen bond acceptor residues of the repeating peptide unit. Why do we want to know protein structure?. Classification. Functional Prediction. What is protein structure?. Primary - chains of amino acids. Secondary - interaction between groups of amino acids. Tertiary - the organization in three dimensions of all the atoms in a polypeptide. C483 Spring 2013. 1. Which . statement is false about a globular protein that performs its biological function as a single independent polypeptide chain?. A. ) Its tertiary structure is likely stabilized by the interactions of amino acid side chains . Alexey Onufriev, . Virginia Tech. www.cs.vt.edu/~onufriev. Proteins play key roles in a living system. Three (out of many many) examples of protein functions. Catalysis:. Almost all chemical reactions in a living cell are catalyzed by protein enzymes.. Alexey Onufriev, . Virginia Tech. www.cs.vt.edu/~onufriev. Proteins play key roles in a living system. Three (out of many many) examples of protein functions. Catalysis:. Almost all chemical reactions in a living cell are catalyzed by protein enzymes.. loops (coil). Bovine . carboxypeptidase. A. Figure 6-28. Tertiary . structures . may contain . common patterns, or motifs, of secondary structures (= . supersecondary. structures) . βαβ. β. -hairpins. Proteins. The Role of Enzymes. Success criteria. By the end of this lesson we will be able to:. State what elements are found in proteins. Describe what is meant by primary, secondary and tertiary structure of proteins.. loops (coil). Bovine . carboxypeptidase. A. Figure 6-28. Tertiary . structures . may contain . common patterns, or motifs, of secondary structures (= . supersecondary. structures) . βαβ. β. -hairpins. VBC-603. P.G.. 30.12.2020. Protein . Strucuture. Sequence, Structure and Function. What determines fold?. Anfinsen’s experiments in 1957 demonstrated that proteins can fold spontaneously into their native conformations under physiological conditions. This implies that primary structure does indeed determine folding or 3-D . Dr. . Shaimaa. . Munther. . Learning Outcomes - Proteins. Define the levels of protein conformation and to indicate the role of weak interactions.. Illustrate how protein structure relates to protein function using examples.. Dr. Ahmed Mujamammi. Dr. . Sumbul. . Fatma. Learning outcomes. What are proteins?. Structure of proteins:. Primary structure.. Secondary structure.. Tertiary structure.. Quaternary structure.. Denaturation of proteins.. Proteins are biopolymers, made of the 20 L- . α. -amino acids linked by peptide bonds.. Polypeptide backbone is a repeating sequence of. . N-C-C-N-C-C…. The side chain or R group is not a part of the backbone or the peptide bond.. Some of the slides are adapted from Dr. Dong Xu’s lecture notes. Why secondary structure prediction?. Accurate secondary structure prediction can be an important information for the tertiary structure prediction. , . Brent O. . Cezairliyan. , Robert A. Grant, Jesse C. . Cochrane, . and Robert T. . Sauer - . Department . of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 . Presented by . Gayathri Priya Ravichandran. Virginia Tech. www.cs.vt.edu/~onufriev. Gene is protein. ’. s blueprint, genome is life. ’. s blueprint . Gene. Genome. DNA. Protein. Gene. Gene. Gene. Gene. Gene. Gene. Gene. Gene. Gene. Gene. Gene.