Biosilk is a term used to describe a biomimetic, synthetic fibre manufactured by sequencing protein (dragline silk) produced by the orb-weaving spider Nephila Clavipes. The protein produced by this spider is called dragline silk and consists mainly of alanine and glycine. By synthesising the gene to code and thereby find a suitable host organism such as bacteria, yeast, and plant to express the gene, so it produces the protein.
Then, an appropriate solvent is needed to dissolve the protein for spinning it into fibre form bypassing the liquid form of the protein through a small orifice. The next step is to remove the solvent by drying; this results in an outstanding durable biosilk fibre.