Question

UESTION 18 Which one is not an example of a protein with quaternary structure? O A Hemoglobin in adult humans has the composition 02B2 The hemoglobin in sickle cell anemia sufferers has the composition a2S2 OB. Calmodulin is a calcium-binding protein found in eukaryotic organisms. It has two identical subunits OC. Lysozyme, an enzyme that catalyzes the destruction of the cell walls of certain bacteria, consists of a single polypeptide. OD. In plants and some bacteria, the photosynthetic enzyme Rubisco is composed of 8 large subunits and 8 small subunits

Answer 1

Quarternary structure of proteins refers to the number and arrangement of polypeptide subunits of multimeric proteins. In the given options, A, B and D talk about subunits of proteins and therefore, refer to quarternary structure. The right answer here is option C, which refers to a single polypeptide stucture of Lysozyme.