PEPTIDE EXPRESSION AND DELIVERY SYSTEM

摘要

This invention relates to methods and compositions for producing a fusion protein comprised of Haemophilus influenzae P2 amino acid sequences, wherein the loop (5), or a portion thereof, is displayed a heterologous or homologous peptide sequence having biological activity. The fusion protein may be expressed on the surface of the host cell, such as in H. influenzae, which has been transformed with a fusion sequence that is operatively linked to at least one regulatory control element for expression of the fusion protein. Alternatively, the fusion protein can be purified from the host cell in the expression system, if the fusion protein remains associated with the host cell; or from the media of the expression system, if the fusion protein is a secreted form.