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please tell me what is the shortest active fragment of pgk

[gb2312] shude yang sdyang68 at yahoo.com.cn
Thu Jul 3 22:23:06 EST 2003


I have spent half a year to modify a expression vector
of yeast. A important part of work was to insert a
promoter of phosphoglycerate kinase (PGK) and a PGK
terminator into pFL39.However, after having inserted a
630bp- length fragment of PGK promoter drevied from
another vector, I found that there were various kind
of PGK promoters with different length in database,
such as of 1484bp, 1496bp, 603bp, 400bp(it is called
active site of PGK promoter) fragment. Therefore, I am
anxiously worried about whether the PGK promoter of
603bp which I used in my work is active enough to
initiate transcription. As knowing little about the
characteristics of promoter structure, I hope you can
give a urgent help. The sequence of PGK promoter I
used is showed as follows:




Thank you very much

Shude Yang
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