Re: molecular arrangement of an inversion


<pslant@xxxxxxxxx> wrote in message
news:g020ia$1su1$1@xxxxxxxxxxxxxxxxxxxxxx
I cant find any explanation of how an inverted piece of dna is able to
reintegrate.
My problem is that if you turn the piece 180 degrees 5' becomes 3' and
vice versa. does the information bearing strand switch strand when
it's reattached ? Or can a strand have a part that is arranged in the
opposite 3' to 5' direction?
If the inverted piece actually IS attached to the "other" strand, how
does the transcription process know to change strand for the inverted
piece ?

Now if thats not a problem, does that mean that the only reason only
one strand (in eucariotes) is transcribed is because there doesnt
happen to be any promoters on the "wrong" strand.


Here's a picture to illustrate PiP's comments

http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mboc4.figgrp.973


Graham


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