Covalently fused viral coat proteins for the display of target molecules

A fusion protein comprising a target protein, a first recombinant viral coat protein, a second recombinant viral coat protein and a first linkage peptide, wherein the target protein is at N-terminus of the first recombinant viral coat protein, wherein the first recombinant viral coat protein is linked to N-terminus of the first linkage peptide, wherein the second recombinant viral coat protein is linked to C-terminus of the first linkage peptide, and

• (a) wherein the first recombinant viral coat protein comprises an amino acid sequence identical to SEQ ID NO:
• 1 or at least 80% identical to SEQ ID NO:
• 1 with one or more deletions, insertions or substitutions within residues 17-38 of SEQ ID NO:
• 1;
• (b) wherein the second recombinant viral coat protein comprises an amino acid sequence identical to SEQ ID NO:
• 1 or at least 80% identical to SEQ ID NO:
• 1 with one or more deletions, insertions or substitutions within residues 17-38 of SEQ ID NO:
• 1;
• or
• (c) wherein the first recombinant viral coat protein comprises an amino acid sequence identical to SEQ ID NO:
• 1 or at least 80% identical to SEQ ID NO:
• 1 with one or more deletions, insertions or substitutions within residues 17-38 of SEQ ID NO:
• 1, and the second recombinant viral coat protein comprises an amino acid sequence identical to SEQ ID NO:
• 1 or at least 80% identical to SEQ ID NO:
• 1 with one or more deletions, insertions or substitutions within residues 17-38 of SEQ ID NO:
• 1.