Abstract: The present invention provides methods and compositions for rapidly producing multivalent recombinant vaccines using filamentous fungal heterokaryons. The present invention relies on the use of filamentous fungal heterokaryons that are generated from combinations of two or more parent strains into which recombinant DNA molecules encoding variants of antigens derived from pathogenic organisms have been introduced. The resulting vaccines are multivalent.

Abstract: The present invention provides methods and compositions for rapidly producing multivalent recombinant vaccines using filamentous fungal heterokaryons. The present invention relies on the use of filamentous fungal heterokaryons that are generated from combinations of two or more parent strains into which recombinant DNA molecules encoding variants of antigens derived from pathogenic organisms have been introduced. The resulting vaccines are multivalent.

Abstract: The present invention provides methods and compositions for producing and screening combinatorial metabolic libraries of multimeric proteins. The present invention relies on the use of filamentous fingal heterokaryons that are produced using two or more parent strains into which a population of heterologous nucleic acids encoding components of a metabolic pathway have been introduced.

Abstract: The present invention provides improved host cells for use in producing secreted recombinant proteins, methods of making the improved hosts and uses thereof. The invention specifically provides strains of Neurospora crassa which produce reduced levels of extracellular proteases when compared with wild-type Neurospora crassa.

Abstract: The al-3 and related promoters can be used to provide light-regulated recombinant production of heterologous proteins in filamentous fungi. Expression systems utilizing these promoters can be placed in vectors which also optionally contain selectable marker means.

Abstract: Neurospora crassa transformations are employed for production of heterologous proteins, where DNA constructs are prepared using a foreign gene under transcriptional and translational regulatory regions functional in Neurospora. A functional signal sequence is provided for secretion of the heterologous gene product. An auxotrophic Neurospora host is employed and transformed by the combination of the subject construct and a complementing gene. The resulting transformants provide for efficient secretion of the heterologous product.

Abstract: The present invention prowdes methods and compositions for producing and screening combinatorial libraries of multimeric proteins. The present invention relies on the use of filamentous fungal heterokaryons that are produced using two or more parent strains into which a population of DNA molecules encoding variants of a multimeric protein have been introduced.

Abstract: The invention relates to a heterokaryotic filamentous fungus host capable of producing a heterologous heterodimer comprising at least two subunits. The heterokaryon contains a first and second nucleus; each nucleus contains an expression system for one subunit of the heterodimer. The heterokaryon is prepared by culturing together a first fungus host strain and a second fungus host strain that is homozygous with the first fungus host strain with respect to all heterokaryon compatibility alleles, wherein the first and second fungus host strains are cultured together under conditions wherein neither the first nor the second fungus strain can survive unless the heterokaryotic host is formed.

Abstract: Monoclonal antibodies are provided capable of distinguishing DNA-RNA hybrid complexes from single stranded DNA and RNA and double stranded DNA and RNA. The antibodies find particular use in determining the presence of a specific nucleic acid sequence on a solid surface. Single stranded polynucleotide is fixed to a solid (gel) surface and then hybridized with the complementary probe. The hybrid complex specific monoclonal antibody is then added to bind to any hybrid complexes which have formed. By appropriate label, the hybrid complex may be visualized in a variety of ways.

Abstract: Monoclonal antibodies are provided capable of distinguishing DNA-RNA hybrid complexes from single stranded DNA and RNA and double stranded DNA and RNA. The antibodies find particular use in determining the presence of a specific nucleic acid sequence on a solid surface. Single stranded polynucleotide is fixed to a solid (gel) surface and then hybridized with the complementary probe. The hybrid complex specific monoclonal antibody is then added to bind to any hybrid complexes which have formed. By appropriate label, the hybrid complex may be visualized in a variety of ways.