The single polypeptide chain is folded into three parts, with the active site at their conjunction. In the active enzyme, the side chain of His 64 is in a position consistent with the formation of ...

This theory supposes the uncoiling of a polypeptide chain (see, for example ... of a protein of the greatest possible simplicity of structure. Silk fibroin, which is free from sulphur and contains ...

Amino acids are joined together by peptide bonds to form polypeptide chains. The sequence of amino acids in a protein, known as its primary structure, is determined by the genetic code. This sequence ...