| 摘要 |
<p>The invention provides an expression cassette comprising: a) a regulatory element comprising the nucleotide sequence of the GCN4 transcription factor promoter or a functional derivative or fragment thereof; b) a heterologous coding sequence downstream to said regulatory element; c) a termination signal operably linked downstream to said heterologous sequence; and d) optionally, an operably linked selectable marker.</p> |
