transposon mutagenesis

micjms at micjms at
Wed Sep 13 06:16:49 EST 1995

I am wondering if anyone knows of a transposon that definitely causes polar
mutations in E.coli. I need to mutatate upstream genes and determine whether
they have any effect on the transcription of my gene of interest which is
downstream. Basically I need to determine if my gene is part of an operon. I
know of cases in E.coli where genes that are part of one operon were disrupted
with Tn5, which did not cause polar effects.

Thanks in advance


e-mail: micjms at

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