Production of heterologous polypeptides in yeast
First Claim
1. A process for making a heterologous, non-bacterial polypeptide or an intermediate therefore in yeast comprising (i) culturing a yeast strain comprising a polynucleotide sequence encoding the polypeptide or an intermediate therefore under suitable culture conditions for expression of the polypeptide or its intermediate, wherein the polynucleotide sequence encoding the polypeptide or its intermediate is expressed under transcriptional control of a yeast CIT1 promoter or a functional part or variant thereof;
- and (ii) isolating the expressed product.
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Abstract
A process for producing high amount of proteins or polypeptides in yeast is disclosed. The process makes use of the CIT1 yeast promoter or a functional part or variant thereof. Examples of polypeptides which are expressed in high yields are insulin or insulin analogues or GLP1.
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Citations
19 Claims
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1. A process for making a heterologous, non-bacterial polypeptide or an intermediate therefore in yeast comprising (i) culturing a yeast strain comprising a polynucleotide sequence encoding the polypeptide or an intermediate therefore under suitable culture conditions for expression of the polypeptide or its intermediate, wherein the polynucleotide sequence encoding the polypeptide or its intermediate is expressed under transcriptional control of a yeast CIT1 promoter or a functional part or variant thereof;
- and (ii) isolating the expressed product.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16)
- 11. A polynucleotide construct comprising a polynucleotide sequence encoding a non-bacterial polypeptide or an intermediate therefore operably linked to a DNA sequence encoding a CITI yeast promoter or a functional part or variant thereof, wherein said polypeptide is heterologous with respect to the CIT1 promoter.
- 18. A yeast expression vector comprising in proper reading frame (a) a polynucleotide sequence comprising a CIT1 yeast promoter or a functional part or variant thereof, (b) a polynucleotide sequence encoding a non-bacterial heterologous polypeptide or an intermediate therefore, (c) a suitable leader sequence and, optionally (d) a transcription terminator sequence.
Specification