BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Some globular proteins have a quaternary structure, and it is formed when two or more globular protein molecules (monomer) join together and form a multimeric unit. Hemoglobin is a good example of a protein that has a quarternary structure.

Detailed explanation-2: -An example of tertiary structure is a single-domain globular protein. Globular proteins (6) are sphere-like proteins that are more or less soluble in aqueous solutions (the other two protein classes are membrane and fibrous proteins) (Figure 13).

Detailed explanation-3: -Haemoglobin is a quaternary protein, made up of 4 tertiary globular subunits. Two of these subunits consist of chains, while the other two contains chains. Each of these globular subunit is linked to haem. Each globular unit is covalently bonded to haem.

Detailed explanation-4: -Globular proteins have a tertiary structure as guided by the primary arrangement of amino acids in the polypeptide chains. The polypeptide chains in globular proteins are arranged in the form of domains. These domains undergo folding to form a globular molecule.

Detailed explanation-5: -In biochemistry, globular proteins or spheroproteins are spherical ("globe-like") proteins and are one of the common protein types (the others being fibrous, disordered and membrane proteins). Globular proteins are somewhat water-soluble (forming colloids in water), unlike the fibrous or membrane proteins.