Protein structure. From Linear sequence of amino acids, alpha helices and Linear sequence to Polypeptide chain and Multiple protein subunits in one co Stock Vector Image & Art - Alamy
Protein Structure and How to Study It - Rapid Novor
Levels of Protein Organization
Protein Structures: Primary and Secondary Structures (A-level Biology) - Study Mind
Beta-sheet - The School of Biomedical Sciences Wiki
If 2 or more polypeptide chains are joined to form a beta-pleated sheet, why is this considered secondary structure rather than quaternary structure of a protein? - Quora
How many polypeptide chains are there in 1 Hb molecule?A. 2 alpha & 2 betaB. 4 alphaC. 4 betaD. 1 alpha & 3 beta