On density of DNA

Andrew Cockburn afc at gnv.ifas.ufl.edu
Sat Dec 10 21:36:46 EST 1994

In article <3bl80f$1vn at obelix.cica.es>, bb1rofra at lucano (Antonio Rodriguez Franco) writes:
> I assume ethidium bromide increases the density of DNA. Is that is true,
> does anybody know what the density of DNA should be in the presence and in 
> the absence of EtBr ?.
> Antonio R. Franco
> Cordoba (Spain)

Roughly 1.5 g/ml with EtBr, 1.7 g/ml without EtBr.  It will vary according
to lots of factors, such as G+C, supercoiling, EtBr concentration, etc.

Note EtBr decreases density of DNA.

Andrew Cockburn

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