Discuss the structural organization of proteins?

Answer 1

Proteins are polymers of amino acids covalently linked through peptide bonds into a chain.The amino acid sequence of a protein determines the higher levels of structure of the molecule.Each type of protein differs in its sequence and number of amino acids; therefore, it is the sequence of the chemically different side chains that makes each protein distinct. The two ends of a polypeptide chain are chemically different. They are primary, secondary,tertiary,Quaternary and complex structures of protein

protein structures.

The primary structure of peptides and proteins refers to the linear number and order of the amino acids present.

The ordered array of amino acids in a protein confer regular conformational forms upon that protein. These conformations constitute the secondary structures of a protein.

Tertiary structure refers to the complete three-dimensional structure of the polypeptide units of a given protein. Included in this description is the spatial relationship of different secondary structures to one another within a polypeptide chain and how these secondary structures themselves fold into the three-dimensional form of the protein.

Many proteins contain 2 or more different polypeptide chains that are held in association by the same non-covalent forces that stabilize the tertiary structures of proteins. Proteins with multiple polypetide chains are termed oligomeric proteins. The structure formed by monomer-monomer interaction in an oligomeric protein is known as quaternary structure.

Proteins also are found to be covalently conjugated with carbohydrates. These modifications occur following the synthesis (translation) of proteins and are, therefore, termed post-translational modifications.

Some of the forces controlling protein structures are:
Hydrogen Bonding
Hydrophobic Forces
Electrostatic Forces
van der Waals Forces

Answer 2

There are three or four levels of structural organization of proteins depending upon what protein you are referring to.

The first level of organization is called the primary structure. It is the list or sequence of amino acids that are strung together (by peptide bonds) to form the particular protein.

The second level of organization (secondary structure) refers to repeating structures (near neighbour folding , interaction ) in the protein due to thermodynamic forces. There are two major types of folding (alpha-helix, beta-pleated sheets) although in special proteins there are more.

The third level of organization is called tertiary structure and it is the longer distance folding of the secondary structure into its 3D shape. This is the native proten shape.

The fourth level of organization only occurs if there are two (or more) chains that make up the protein. The quaternary structure describes the way that the chains in their tertiary structure are associated with each other.

Answer 3

What do you mean? What their chemical structure is??

Answer 4

No, you can't make me!