Re: [Jmol-users] Advice on display of cyclic DNA: more ...

[Rzepa, H. <h....@im...>]

>Hi Henry
>Nice molecule!


It (sort of ) has  D2 symmetry, and is therefore dissymetric in its own right

> I had only known cyclic DNA molecules as in
>"circular" DNA, e.g. procariotic DNA and plasmids. Chemicaly there is
>not much difference.
>Just for info, RasMol and Accelrys DS Visualizer don't link the ends
>either.

Yes, the connection, as others have now noted, is a covalent bond between
 P     C A   1                 O3*   T A   8 

but for some reason, no-one appears to have incorporated this into the cartoons.
-- 

Henry Rzepa.
+44 (020) 7594 5774 (Voice); http://www.ch.ic.ac.uk/rzepa/rzepa.xrdf (FOAF)
http://www.ch.ic.ac.uk/rzepa/ Dept. Chemistry, Imperial College London, SW7  2AZ, UK.

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