Online Microbiology and Biology Notes
What does Biuret test for? Proteins are the complex compound formed by thousands of amino acids. Amino acids are amphoteric electrolytes having carboxyl and amino groups that act like acid and base. It has one positive charge and one negative charge, hence these ions are electrically neutral and do not migrate in the electric field. The two amino acids are …
Membrane Proteins Biological membranes consist of a continuous double layer of lipid molecules in which membrane proteins are embedded. Although the lipid bilayer provides the basic structure of biological membranes, the membrane proteins perform most of the membrane’s specific tasks and therefore give each type of cell membrane its characteristic functional properties. The amounts and types of proteins in a …
Digestion and Absorption of Carbohydrates, Proteins, and Fats Carbohydrates, fats, and proteins are the major nutrients the body needs for growth, repair, movement, and maintaining tissue and organ function. These macromolecules are broken down and absorbed into the body at different rates and into specific forms as they travel through the organs in the digestive system. Digestion of carbohydrates Among …
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Homology Modeling- Working, Steps, and Uses Homology modeling is also known as comparative modeling predicts protein structures based on sequence homology with known structures. It is based on the principle that “if two proteins share a high enough sequence similarity, they are likely to have very similar three-dimensional structures.” It hence relies on the identification of one or more known …
Proteins- Properties, Structure, Classification and Functions Proteins are the most abundant biological macromolecules, occurring in all cells. It is also the most versatile organic molecule of the living systems and occur in great variety; thousands of different kinds, ranging in size from relatively small peptides to large polymers. Proteins are the polymers of amino acids covalently linked by the peptide …
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Four levels of hierarchy in protein conformation can be described. A. PRIMARY STRUCTURE PRIMARY STRUCTURE refers to the order of the amino acids in the peptide chain. 1. The free α-amino group, written to the left, is called the amino-terminal or N-terminal end. 2. The free α-carboxyl group, written to the right, is called the carboxyl-terminal or C-terminal end. B. …
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