Crystal Structure of Wild and Domestic Silk Fibres Using Linked-Atom Least-Squares Method

In 1995, Marsh et al. concluded the structure of silk fibroin, the protein which is extended polypeptide chain of amino acid groups consisting of carbon, oxygen and nitrogen atoms. This structure is an antiparallel b-pleated chain of hydrogen bonds consisting of alternating Glycyl and Alanyl groups sometimes replacing this with the seryl group. Based on this, the structure of silk can be derived by employing the method known as linked-atom least-squares (LALS) method.