Development of fibre the feedstock

Neither spider nor silkworm silks are a simple single protein bio-polymer. Indeed, the typical spider major ampullate dragline silk contains many different 

Recent investigations of the gel-like protein content gathered and stored in the sac-like glands of the major ampullate glands revealed that the majority 

Gland Species Gene Transcript size (xIO bases) Ref. 

The sequences reveal that the genes are highly repetitive in their main parts [40]. Due to the codons of the most prominent amino acids alanine and glycine they are very rich in guanine (8.3) and cytosine (8.4) although these nucleotides are avoided in the third position. The latter is reflected by clusters of tRNA genes with the respective anticodons [41]. 

The repetitive parts of the protein sequences are made up of several peptide motifs that are iterated multiple times to form repetitive structural modules. These motifs are used in various combinations in the different 

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