2 public questions tagged with this topic.
The quaternary structure refers to the arrangement and interaction of multiple polypeptide chains in a functional protein.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Chemical Analysis and Biomolecules - Amino Acids Lipids
To protect their delicate internal nucleic acid genome, viruses are enveloped in a robust protein coat called a capsid. According to the NCERT text, this capsid is structurally composed of many small, repeating, interlocking protein subunits called 'capsomeres'. These capsomeres are typically arranged in highly precise geometric patterns, such as helical or complex polyhedral forms, depending on the specific virus species.
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.6 Viruses, Viroids, Prions and Lichens
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