Adult human haemoglobin consists of four subunits, specifically two subunits of type and two subunits of type. This assembly of multiple polypeptides represents which level of protein structure?

Step-by-step solution

According to NCERT, some proteins are an assembly of more than one polypeptide or subunits. The manner in which these individual folded polypeptides or subunits are arranged with respect to each other is the architecture of a protein otherwise called the quaternary structure. Adult human haemoglobin consists of 4 subunits (two and two type), which is a classic example of quaternary structure. The and designations here refer to the types of subunits in the quaternary assembly, not to the -helix or -pleated sheet of