what are Quaternary structure of protein?

Asked by  | 26th Aug, 2012, 12:27: PM

Expert Answer:

Quaternary structure , is the structure that results of  the assembly of several polypeptide to make an unique functional protein, stabilized through several noncovalent interactions between the R side chain of amino acids from different peptide chains.

 

The non covalent interactions that maintain this structure are the same non covalent interactions that maintain the tertiary structure: Hydrogen bonds, Ionic interactions, Hydrophobic attractions and Van der Waals Forces.

The arrangement of the monomers in the three-dimensional protein is the quaternary structure. The most common example used to illustrate quaternary structure is the hemoglobin protein.

Answered by  | 27th Aug, 2012, 01:44: PM

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