The following points highlight the five main forces that stabilise protein structures. The forces are: 1. Salt Linkages 2. Hydrogen Bonding 3. Disulfide Linkages 4. Hydrophobic Interactions 5. Van der Waals' Forces. Force # 1. Salt Linkages: Salt linkages (ionic bonds) result from interactions between positively and negatively charged groups on the side chains of the basic and acidic amino [...]
In this article we will discuss about:- 1. Definition of Proteins 2. Classification of Proteins 3. Composition of Protein Molecule 4. Primary Structure 5. Secondary Structure 6. Quaternary Structure. Definition of Proteins: Proteins may be defined as high molar mass compounds consisting largely or entirely of chains of amino acids. The general formula of a naturally occurring amino acid may [...]
Here is a list of top fifteen experiments on photochemical tests for proteins: 1. Precipitation of proteins with heavy metals 2. Precipitation of proteins by alkaloid reagents 3. Tannic acid test 4. Heller's test 5. Acetic acid-potassium ferrocyanide test 6. Biuret reaction 7. Ring biuret test 8. Nanthoproteic reaction for tyrosine, phenylalanine and tryptophane 9. Millon's test for tyrosine and [...]