Which of the following protein can't have quaternary structure?
For quaternary structure to be present you need more than one polypeptide chain Albumin is a single polypeptide. So, the highest structure it can have is teiary structure. Hemoglobin & Immunoglobulin are tetramer - option b and c are excluded. Collagen has the quaternary structure of quaer staggered arrangement - option d is excluded. fig:-Quaer stagger arrangement of tropocollagen
Albumin
Immunoglobulin
Hemoglobulin
Collagen
Proteins bonds and structure