recombinant proteins of spider silk

A recombinant protein spider silk comprising one or more sequences of silk proteins synthetic repetitive spider, (a) wherein the synthetic repetitive sequence comprises from 5 to 50 repeat units, and wherein a repeating unit consisting of amino acid sequence of the sec. with no. ident .: 5 or variants thereof, or (b) wherein the synthetic repetitive sequence comprises from 10 to 50 repeating units, and where a repeat unit consists of the amino acid sequence of SEQ. with no. ident .: 3 or 10 variants and this is combined with a repeat unit consisting of the amino acid sequence of SEQ. with no. ident .: 4 or variants thereof, wherein the variants each have an amino acid substitution, amino acid deletions and / or insertions of amino acid wherein the amino acid substitution consists of one amino acid substitution, amino acid deletions consist of 1 to 2 amino acid deletions and / or amino acid insertions consist of between 1 to 2 amino acid insertions.