Arnoud van Vliet
arnoud at vanvliet.u-net.com
Sun Jun 28 18:52:35 EST 1998
you'll have to be give a few more details. Do you get a double band with
every nucleotide? What kind of sequencing: radioactive / non-radioactive? If
you sequence non-radioactive, with a fluorescein labelled primer, then the
double banding might be explained by incomplete labelling of the primer.
When I started doing radioactive sequencing using fluorescein labelled
primers, they were usually incomplete labelled. The non-radioactive
sequencer I bought the primers for didn't work properly at the time, so I
had to do radioactive sequencing. And as the fluorescein group changes the
MW of the primer by about one base, that explained the double bands: one of
the fluorescein-labelled primer, one of the unlabelled primer.
Sorry, I have run out of other explanations with only this information.
Supply the newsgroup with more details and somebody might be able to help
From: J. Hendriks <hendrikb at worldonline.nl>
Date: 28 June 1998 11:53
In my last sequencing gel I saw double bands instead of one. These bands are
not due to a mutation. Does anyone have an explanation. Please respond also
to my e-mail adress: b.hendriks at wkz.azu.nl
Thank you very much.
More information about the Methods