introduction to protein structure

Proteins - Introduction - Proteins are the high molecular mass complex biopolymers of amino acids and organic compounds that are most important to life. They are essential for growth and maintenance of life. They are high molecular weight, nitrogen rich substances that..

Proteins are the high molecular mass complex biopolymers of amino acids and organic compounds that are most important to life. They are essential for growth and maintenance of life. They are high molecular weight, nitrogen rich substances that are present all living cells of animals and p..

Proteins, which constitute about 10 to 12% of the cell contents, are macromolecules having a significant role in the metabolism of a cell. Proteins are polymers of amino acids. Each protein is a linear, unbranched, polypeptide molecule. The order in which amino acids..

Proteins - Proteins are the chief body builders of the body. They are complex molecules made up of carbon, hydrogen, oxygen and nitrogen (sometimes sulphur and phosphorus). Proteins are used to synthesize enzymes (e.g., pepsin, trypsin), hormones (e.g., insulin, adrena..

Responsible for muscle contraction for movement and locomotion Example : Myosin Harmones Some harmones are proteins. Harmones regulate body functions Example : Insulin Structural Proteins form parts of cells and tissues Example : Collagen Protective ..

Proteins are biopolymers containing a large number of amino acids joined to each other by peptide linkages having three dimensional structures. The structure of proteins is a complex one which is divided into 4 parts. They are primary, secondary, teritiary an..

Proteins are biopolymers containing a large number of amino acids joined to each other by peptide linkages having three dimensional structures..

The three dimensional structure of a protein is known as tertiary structure of a protein. This is a compact structure i.e., further folding of the secondary structure. It coils and folds in such a way that the hydrophobic side chains are h..

fig 17.1 - Model of a tri-peptide showing peptide bonds in boxes and Ramchandran angles of rotation (F and Y) around a-carbon As shown in the fig above, the free rotation of a peptide chain can only occur around the bonds joining the nearly planar amide groups to the -carbons. The angles shown as f..

Biomolecules are complex organic molecules. These molecules form the basic structural constituent of a living cell. The organic compounds such as amino acids, nucleotides and monosaccharides serve as building blocks of complex biomolecules. The important biomolecules are protei..