PPT-1. Body proteins have life times. They undergo degradation and re-synthesis. About 6

2 Aged proteins damaged or modified proteins and nonfunctional proteins of the body undergo degradation 3 Protein degradation may play important role in shaping tissues and organs during pregnancy and development. The classic principle of . protein folding. is that all the information required for a protein to adopt the correct three-dimensional conformation is provided by its amino acid sequence.. Molecular chaperones. BIOCHEMISTRY. DR AMENA RAHIM. Structure of . Elastin. It is a connective tissue protein. Rubber like properties. Elastin. & glycoprotein . microfibrils. . are present in lungs, walls of large arteries, elastic ligaments.. By: . Hemangi. . Atalia. introduction. Cell is the structural and functional unit of life.. Cells Tissue Organ . Organ. system.. Cells contain a variety of Internal Structures called . (endoplasmic reticulum). Dr. Mamoun Ahram. Faculty of Medicine. Second year, Second semester, 2014-2014. Principles of Genetics and Molecular Biology. An overview. Endoplasmic reticulum (ER). It is a network of membrane-enclosed tubules and sacs (. Amino . Acids. In a transamination reaction, . aspartate transaminase (AST) . catalyzes the reversible transfer of an amino group between glutamate and aspartate.. an . α. -amino group is transferred from an amino acid to an . Objectives. Explain the purpose and process of transcription and translation. Recognize that gene expression is a regulated process. Describe the roles of DNA and RNA in cell differentiation. Identify and illustrate changes in DNA and evaluate the significance of these changes. Protein Synthesis. Protein Synthesis. DNA contains . genes. sequences . of nucleotide bases. These Genes code for . polypeptides (proteins). Proteins. are. used . to build cells and do much of the work inside cells. Protein synthesis . is simply the "making of proteins." . In order to make even one protein. the body must seek the aid of messenger RNA, transfer RNA, DNA, amino acids, ribosomes, and multiple enzymes. . Protein Synthesis (Gene Expression) Notes. Proteins . (Review). Proteins make up all . living. materials. Proteins are composed of . amino acids. – there are . 20. . different amino acids. Different . A nutrient found in all living things. It contains nitrogen and is responsible for the formation, maintenance, and repair of the body’s tissues/ It can also be used for energy. CHNO. Amino acids . 4. calories per gram. . The main function of protein is to . build and repair body tissues. .. If carbohydrates and fat are not available, your body will use protein. Is this a good thing? . You must eat protein . The concentration of many of these are affected by pathological processes; they are therefore measured.. They contain disulphide bonds.. Functions of plasma proteins include:. Transport. Maintaining plasma . 69NB. Directions:. Using the DNA strand as a template, transcribe mRNA. Make sure to use the correct Nitrogen bases.. ATA CCT TAA CGC GTC. TAT TAG GCA AAA TTC. GTG TGA TTA ATA GCC. CTA AAG GAA TAG GAT. What organelle makes proteins?. Where are these organelles found?. How does the information from DNA get to those organelles?. Protein Synthesis Overview. The information in . DNA . is used to make .