PROCESS FOR PRODUCING FUSION PROTEINS COMPRISING SCFV FRAGMENTS BY A TRANSFORMED MOULD

摘要

The present invention provides a process for producing fusion proteins comprising ScFv fragments by a transformed Aspergillus mould containing a DNA sequence encoding the ScFV fragment under control of at least one expression and/or secretion regulating region derived from a mould selected from the group consisting of promoter sequences, terminator sequences and signal sequence-encoding DNA sequences or functional derivatives or analogues thereof. Such regulating region can be derived from the endoxylanase II gene (exlA gene) of Aspergillus niger var. awamori present on plasmid pAW14B or can be the combination of both a promoter and a signal sequence-encoding DNA sequence derived from a glucoamylase gene ex Aspergillus plus a terminator sequence of a trpC gene ex Aspergillus. Preferably a fusion protein comprising 'secreted mould protein - (KEX2 -) ScFv' is produced. Also provided are new products comprising an ScFv fragment or fusion product thereof, compositions, e.g. consumer products, containing both old and new products so produced. Preferably the ScFv fragment recognizes a compound present in the human eco-system, such as microorganisms or enzymes. Such compounds can be present in the oral cavity, e.g. involved in the formation of plaque, caries, gingivitis, periodontal diseases, or bad breath, or on the human skin, e.g. involved in the formation of malodour, inflammation or hair loss, or can be a hormone, e.g. HCG.