Expression of fusion polypeptides transported out of the cytopla

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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4352523, 4353201, 530350, 536 234, C07K 1900, C12N 1562

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059142545

ABSTRACT:
The invention is directed to the use of a fusion partner that does not contain a leader sequence, as a means to increase the solubility and activity of recombinant polypeptides by facilitating the expression of fusion proteins, which are then transported out of the cytoplasm. The invention includes a nucleic acid encoding a fusion polypeptide comprising a mature interleukin-1-like polypeptide or a leader-deleted-translocating polypeptide, and a polypeptide of interest; as well as host cells comprising such nucleic acids, and fusion proteins so encoded. The invention also encompasses methods of using such nucleic acids to produce recombinant fusion polypeptides, mature polypeptides of interest, and purified compositions thereof.

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