PPT-Polypeptides and proteins -3

Lecture 1 With DrHamzeh Al Share MD Original Slides for Prof Sameeh Al Saraireh Final 1 1 Fibrous proteins  These proteins have a rod like structure They are not. The 411. Proteins account for more than 50% of the dry mass of most cells. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances. Essential idea: Proteins have a very wide range of functions in living organisms.. One of the central ideas in Biology is that structure dictates function. Above you can see insulin in its secondary, tertiary and quaternary structures. Polypeptides vary hugely in the combination and number of amino acids that they are composed from. Even if we consider a single polypeptide it's properties, and hence it's function, would vary greatly depending on it's level of structure. Insulin can exist in all these forms, but the active form, which controls blood glucose levels, is a the tertiary structure.. 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.. 2. : Molecular Biology. 2.4 Proteins. Learning objectives. U: amino acids are linked together by condensation to form polypeptides. U: There . are 20 different amino acids in polypeptides synthesized on ribosomes.. PROTEINS – (DR. TRAISH) Introduction to Proteins - Proteins are abundant and functionally diverse molecules - They participate in cell regulation at all levels - They share a common structural https://www.youtube.com/watch?v=hpaki7F4HR0. http. ://www.wisc-online.com/objects/index_tj.asp?objID=AP13304. Cells contain thousands of different proteins, each performing a specific task.. Examples: Enzymes, . α-helical polypeptides . Polypeptides are . biomedically. important polymers due to their minimal cytotoxicity, proteolytic degradability and the capability to adopt secondary structures reminiscent of naturally occurring . Proteins account for more than 50% of the dry mass of most cells. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances. Polypeptides . are chains of amino acids linked together by condensation reactions. the main, or only, component in proteins. Some proteins are composed of only one polypeptide chain, while others are made of 2 or more. 2.4 Proteins. IB Biology SFP - Mark . Polko. 2. IB Biology SFP - Mark Polko. Understandings. :. Nature. . of science. 3. IB Biology SFP - Mark Polko. Applications. and . skills. Essential idea:.  Proteins have a very wide range of functions in living organisms. Each amino acid (aa) shares a common structure; i.e. an amine (NH. 2. ) group, an acid group (COOH), and a central carbon atom bonded to hydrogen and to a side chain (R).. The side chains qualify aas as acidic, basic, neutral, aromatic, and sulphur-containing amino acids.. Biocompatibility and Cellular Overview Part 2. Outline . Biocompatibility. Quick overview of cellular interaction. Scale, size, generic animal cell. Nanoscale materials . for biological interaction. Liposomes. Acids. By . Professor . Dr. Jamal Ahmed Abdel -Barry. . Rare Amino Acids. In addition to 20 standard amino acids there are several amino acids that can be isolated from the hydrolysis of special type of protein, all are derivatives of some standard amino acids.. Unit 1 Advanced Higher. Miss Aitken. Pages 16-25. Textbook. Proteomics. Genome:. complete set of DNA. Comprises of coding and non-coding areas. 20-25000 genes in human genome. Proteome:. Entire set of proteins that can be expressed from a genome.