摘要:
Novel methods and compositions are provided for the enhanced production of fermentable or known and new β-lactam antibiotics. The process is exemplified by the production of penicillin. In addition, the P.chrysogenum and A.chrysogenum δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine synthetase genes have been isolated and sequenced. Also methods are provided for the production of δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine synthetase using recombined DNA techniques.
摘要:
A nucleotide sequence encoding phytase has been isolated and cloned. The coding sequence has been inserted into an expression construct which in turn has been inserted into a vector capable of transforming a microbial expression host. The transformed microbial hosts may be used to economically produce phytase on an industrial scale. The phytase produced via the present invention may be used in a variety of processes requiring the conversion of phytate to inositol and inorganic phosphate.
摘要:
Novel methods and compositions are provided for the enhanced production of fermentable or known and new secondary metabolites. The process is exemplified for penicillin. In addition, methods are provided for the production of modified P.chrysogenum δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine Synthetase using recombinant DNA techniques.
摘要:
Transformation of Aspergillus , particularly A. niger is demonstrated. Integration at the glucoamylase locus is exemplified. A chymosin expression construct is inserted at a locus, where the chymosin may be joined to a signal sequence for efficient secretion.
摘要:
Clustered antibiotic biosynthetic genes are employed for improvement of production of the antibiotic in microorganisms and for the isolation of other genes involved in the biosynthesis of the antibiotic. The invention is exemplified with improved production of penicillin in Penicillium crysogenum , with the isolation of another clustered biosynthetic gene(s) and with the expression of penicillin biosynthetic genes in Acremonium chrysogenum .
摘要:
Clustered antibiotic biosynthetic genes are employed for improvement of production of the antibiotic in microorganisms and for the isolation of other genes involved in the biosynthesis of the antibiotic. The invention is exemplified with improved production of penicillin in Penicillium crysogenum , with the isolation of another clustered biosynthetic gene(s) and with the expression of penicillin biosynthetic genes in Acremonium chrysogenum .