Help in Primer designing for expression...

Duncan Clark via (by blackhole from
Mon Jul 20 08:22:01 EST 2009

Historians believe that in newspost 
<mailman.618.1248049891.21502.methods from> on Sun, 19 Jul 2009, 
Dr. Hiranya S. Roychowdhury <hroychow from> penned the following 
literary masterpiece:
>Since the ATG start codon is part of the NCO1 sequence,  we use that RE
>site for in-frame ligation.  So, if your amplicon is digested and
>religated at the NCO1 site, you should be fine.

Just remember that for Nco I,  the codon following the ATG must start 
with a G  either original or you must add one i.e.  CC - ATG - GNN

Also pick the correct pET21 i.e. pET21d  :-)

For this reason I much prefer to use Nde I whenever possible i.e. 
CATATG. No problems with extra aa's.

I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.

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