Process for producing polypeptides

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Recombinant dna technique included in method of making a...

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435 911, 4351723, 4352523, 43525233, 4353201, 536 241, C12N 121, C12N 1564, C12P 1934, C12P 2100

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058306900

ABSTRACT:
The invention relates to the construction and use of novel expression systems that make use of DNA sequences encoding a promoter or promoters along with cis-regulatory elements, such as those for proU, that permit osmotically inducible initiation of transcription in bacteria; the expression systems of the present invention can be used to efficiently hyperexpress heterologous gene products including proteins or polypeptides; methods for construction of vectors and strains enabling NaCl-induced hyperexpression of heterologous gene products in several organisms such as Escherichia coli, and methods for NaCl-induced hyperexpression of heterologous gene products, including proteins or polypeptides, using the said novel combinations in a variety of organisms such as Escherichia coli, and further purification of the gene product of interest in either laboratory or industrial scale production systems.

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