Expression and secretion vector for yeast containing a glucoamylase signal sequence
AssigneeBiotechnica International, Inc.
InventorsGregory T. Maine, Robert S. Daves, Robert R. Yocum
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Abstract
A vector including a DNA sequence encoding a secretory signal sequence substantially identical to the secretory signal-encoding sequence of a glucoamylase gene from Saccharomyces diastaticus or S. cerevisiae; and upstream from the signal-encoding sequence, a DNA sequence capable of promoting transcription in yeast (e.g., a high yield promoter, such as the promoter of the triose phosphate isomerase gene), transcription of the signal-encoding sequence being under the control of the transcription-promoting sequence, a site for the insertion into the vector of a heterologous DNA sequence, in reading frame with the signal-encoding sequence. The vector is useful as an expression vector in yeast.
Claims10
A vector comprising
- a DNA sequence encoding a secretory signal sequence of a DEX4 glucoamylase gene from Saccharomyces diastaticus or S. cerevisiae;
- upstream from said signal-encoding sequence, a DNA sequence capable of promoting transcription in yeast, transcription of said signal-encoding sequence being under the control of said transcription-promoting sequence;
- and
- downstream from said signal-encoding sequence, a site for the insertion into said vector of a heterologous DNA sequence, encoding a secretable protein in reading frame with said signal-encoding sequence.
A vector capable of replication in S. cerevisiae, comprising a DEX4 glucoamylase gene derived from S. diastaticus or S. cerevisiae.
Dependencies are inferred from the claim text.